The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:0632 advisory.

    The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

    Security Fix(es):

    * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)

    * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)

    * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)

    * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)

    * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet     (CVE-2019-25037)

    * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)

    * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)

    * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)

    * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)

    * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)

    * unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2060:02 advisory.

    * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)
      * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)
      * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)
      * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)
      * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet     (CVE-2019-25037)
      * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)
      * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)
      * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)
      * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)
      * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)
      * unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the unbound package has been released.

According to the versions of the unbound package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-     in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider this a     vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from the     community that facilitates automatic configuration creation. It is not part of the Unbound installation     (CVE-2019-25031)

  - Unbound before 1.9.5 allows an integer overflow in the regional allocator via regional_alloc. NOTE: The     vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited (CVE-2019-25032)

  - Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE:
    The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited (CVE-2019-25033)

  - Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading to an out-of-     bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable,     a running Unbound installation cannot be remotely or locally exploited (CVE-2019-25034)

  - Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The vendor disputes that     this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be     remotely or locally exploited (CVE-2019-25035)

  - Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname. NOTE: The vendor     disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation     cannot be remotely or locally exploited (CVE-2019-25036)

  - Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid     packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or locally exploited (CVE-2019-25037)

  - Unbound before 1.9.5 allows an integer overflow in a size calculation in dnscrypt/dnscrypt.c. NOTE: The     vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited (CVE-2019-25038)

  - Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c. NOTE: The vendor     disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation     cannot be remotely or locally exploited (CVE-2019-25039)

  - Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor     disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation     cannot be remotely or locally exploited (CVE-2019-25040)

  - Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy. NOTE: The vendor     disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation     cannot be remotely or locally exploited (CVE-2019-25041)

  - Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy. NOTE: The vendor     disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation     cannot be remotely or locally exploited (CVE-2019-25042)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1853 advisory.

    The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

    Security Fix(es):

    * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)

    * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)

    * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)

    * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)

    * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet     (CVE-2019-25037)

    * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)

    * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)

    * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)

    * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)

    * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)

    * unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Unbound before 1.9.5 allows configuration injection in     create_unbound_ad_servers.sh upon a successful     man-in-the-middle attack against a cleartext HTTP     session.(CVE-2019-25031)

  - Unbound before 1.9.5 allows an integer overflow in the     regional allocator via regional_alloc.(CVE-2019-25032)

  - Unbound before 1.9.5 allows an integer overflow in the     regional allocator via the ALIGN_UP     macro.(CVE-2019-25033)

  - Unbound before 1.9.5 allows an integer overflow in     sldns_str2wire_dname_buf_origin, leading to an     out-of-bounds write.(CVE-2019-25034)

  - Unbound before 1.9.5 allows an out-of-bounds write in     sldns_bget_token_par.(CVE-2019-25035)

  - Unbound before 1.9.5 allows an assertion failure and     denial of service in synth_cname.(CVE-2019-25036)

  - Unbound before 1.9.5 allows an assertion failure and     denial of service in dname_pkt_copy via an invalid     packet.(CVE-2019-25037)

  - Unbound before 1.9.5 allows an integer overflow in a     size calculation in     dnscrypt/dnscrypt.c.(CVE-2019-25038)

  - Unbound before 1.9.5 allows an integer overflow in a     size calculation in respip/respip.c.(CVE-2019-25039)

  - Unbound before 1.9.5 allows an infinite loop via a     compressed name in dname_pkt_copy.(CVE-2019-25040)

  - Unbound before 1.9.5 allows an assertion failure via a     compressed name in dname_pkt_copy.(CVE-2019-25041)

  - Unbound before 1.9.5 allows an out-of-bounds write via     a compressed name in rdata_copy.(CVE-2019-25042)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the unbound package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - ** DISPUTED ** Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a     successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider     this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from     the community that facilitates automatic configuration creation. It is not part of the Unbound     installation. (CVE-2019-25031)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via     regional_alloc. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25032)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP     macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25033)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading     to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may     be vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25034)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The     vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25035)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25036)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy     via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25037)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in     dnscrypt/dnscrypt.c. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25038)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25039)

  - ** DISPUTED ** Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE:
    The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25040)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25041)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25042)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the unbound package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in unbound. An out-of-bounds write in     the rdata_copy function may be abused by a remote     attacker. The highest threat from this vulnerability is     to data confidentiality and integrity as well as     service availability.(CVE-2019-25042)

  - A flaw was found in unbound. A reachable assertion in     the dname_pkt_copy function can be triggered through     compressed names. The highest threat from this     vulnerability is to service     availability.(CVE-2019-25041)

  - A flaw was found in unbound. An infinite loop in     dname_pkt_copy function could be triggered by a remote     attacker. The highest threat from this vulnerability is     to service availability.(CVE-2019-25040)

  - A flaw was found in unbound. An integer overflow in     ub_packed_rrset_key function may lead to a buffer     overflow of the allocated buffer if the size can be     controlled by an attacker. The highest threat from this     vulnerability is to data confidentiality and integrity     as well as service availability.(CVE-2019-25039)

  - A flaw was found in unbound. An integer overflow in     dnsc_load_local_data function may lead to a buffer     overflow of the allocated buffer if the size can be     controlled by an attacker. The highest threat from this     vulnerability is to data confidentiality and integrity     as well as service availability.(CVE-2019-25038)

  - A flaw was found in unbound. A reachable assertion in     the dname_pkt_copy function can be triggered by sending     invalid packets to the server. The highest threat from     this vulnerability is to service     availability.(CVE-2019-25037)

  - A flaw was found in unbound. A reachable assertion in     the synth_cname function can be triggered by sending     invalid packets to the server. If asserts are disabled     during compilation, this issue might lead to an     out-of-bounds write in dname_pkt_copy function. The     highest threat from this vulnerability is to data     confidentiality and integrity as well as service     availability.(CVE-2019-25036)

  - A flaw was found in unbound. An out-of-bounds write in     the sldns_bget_token_par function may be abused by a     remote attacker. The highest threat from this     vulnerability is to data confidentiality and integrity     as well as service availability.(CVE-2019-25035)

  - A flaw was found in unbound. An integer overflow in the     sldns_str2wire_dname_buf_origin function may lead to a     buffer overflow. The highest threat from this     vulnerability is to data confidentiality and integrity     as well as service availability.(CVE-2019-25034)

  - A flaw was found in unbound. An integer overflow in the     regional allocator via the ALIGN_UP macro may lead to a     buffer overflow if the size can be controlled by an     attacker. The highest threat from this vulnerability is     to data confidentiality and integrity as well as     service availability.(CVE-2019-25033)

  - A flaw was found in unbound. An integer overflow in     regional_alloc function may lead to a buffer overflow     of the allocated buffer if the size can be controlled     by an attacker and can be big enough. The highest     threat from this vulnerability is to data     confidentiality and integrity as well as service     availability.(CVE-2019-25032)

  - A flaw was found in unbound. The     create_unbound_ad_servers.sh bash script does not     properly sanitize input data, which is retrieved using     an unencrypted, unauthenticated HTTP request, before     writing the configuration file allowing a     man-in-the-middle attack. The highest threat from this     vulnerability is to data integrity and system     availability.(CVE-2019-25031)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - ** DISPUTED ** Unbound before 1.9.5 allows an     out-of-bounds write via a compressed name in     rdata_copy. NOTE: The vendor disputes that this is a     vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or     locally exploited.(CVE-2019-25042)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion     failure via a compressed name in dname_pkt_copy. NOTE:
    The vendor disputes that this is a vulnerability.
    Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25041)

  - ** DISPUTED ** Unbound before 1.9.5 allows an infinite     loop via a compressed name in dname_pkt_copy. NOTE: The     vendor disputes that this is a vulnerability. Although     the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25040)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer     overflow in a size calculation in respip/respip.c.
    NOTE: The vendor disputes that this is a vulnerability.
    Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25039)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer     overflow in a size calculation in dnscrypt/dnscrypt.c.
    NOTE: The vendor disputes that this is a vulnerability.
    Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25038)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion     failure and denial of service in dname_pkt_copy via an     invalid packet. NOTE: The vendor disputes that this is     a vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or     locally exploited.(CVE-2019-25037)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion     failure and denial of service in synth_cname. NOTE: The     vendor disputes that this is a vulnerability. Although     the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25036)

  - ** DISPUTED ** Unbound before 1.9.5 allows an     out-of-bounds write in sldns_bget_token_par. NOTE: The     vendor disputes that this is a vulnerability. Although     the code may be vulnerable, a running Unbound     installation cannot be remotely or locally     exploited.(CVE-2019-25035)

  - Unbound before 1.9.5 allows an integer overflow in     sldns_str2wire_dname_buf_origin, leading to an     out-of-bounds write. (CVE-2019-25034)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer     overflow in the regional allocator via the ALIGN_UP     macro. NOTE: The vendor disputes that this is a     vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or     locally exploited.(CVE-2019-25033)

  - ** DISPUTED ** Unbound before 1.9.5 allows     configuration injection in create_unbound_ad_servers.sh     upon a successful man-in-the-middle attack against a     cleartext HTTP session. NOTE: The vendor does not     consider this a vulnerability of the Unbound software.
    create_unbound_ad_servers.sh is a contributed script     from the community that facilitates automatic     configuration creation. It is not part of the Unbound     installation.(CVE-2019-25031)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名稱	產品	系列	已發布	已更新	嚴重性
158321	RHEL 8 : unbound (RHSA-2022:0632)	Nessus	Red Hat Local Security Checks	2022/2/23	2024/11/7	critical
294526	MiracleLinux 8 : unbound-1.7.3-15.el8 (AXSA:2021-2060:02)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	critical
149828	Photon OS 3.0: Unbound PHSA-2021-3.0-0236	Nessus	PhotonOS Local Security Checks	2021/5/21	2025/8/22	critical
170806	EulerOS Virtualization 3.0.2.2 : unbound (EulerOS-SA-2023-1299)	Nessus	Huawei Local Security Checks	2023/1/30	2024/1/16	critical
149675	RHEL 8 : unbound (RHSA-2021:1853)	Nessus	Red Hat Local Security Checks	2021/5/19	2024/11/7	critical
153069	EulerOS 2.0 SP5 : unbound (EulerOS-SA-2021-2351)	Nessus	Huawei Local Security Checks	2021/9/7	2021/9/9	critical
156512	EulerOS Virtualization 3.0.2.6 : unbound (EulerOS-SA-2021-2909)	Nessus	Huawei Local Security Checks	2022/1/6	2022/1/6	critical
151309	EulerOS Virtualization for ARM 64 3.0.2.0 : unbound (EulerOS-SA-2021-2124)	Nessus	Huawei Local Security Checks	2021/7/2	2023/12/11	critical
151554	EulerOS Virtualization 2.9.0 : unbound (EulerOS-SA-2021-2210)	Nessus	Huawei Local Security Checks	2021/7/13	2023/12/8	critical
151556	EulerOS Virtualization 2.9.1 : unbound (EulerOS-SA-2021-2175)	Nessus	Huawei Local Security Checks	2021/7/13	2023/12/8	critical

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