This updated addresses a minor security vulnerability in the Sun RPC client (CVE-2016-4429), increases compatibility with GCC 6, and addresses a problem which caused `fork` to crash when `BIND_NOW` was used for linking shared objects.

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

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

  - elf/dl-load.c in the GNU C Library (aka glibc or libc6)     2.19 through 2.26 mishandles RPATH and RUNPATH     containing $ORIGIN for a privileged (setuid or     AT_SECURE) program, which allows local users to gain     privileges via a Trojan horse library in the current     working directory, related to the fillin_rpath and     decompose_rpath functions. This is associated with     misinterpretion of an empty RPATH/RUNPATH token as the     './' directory. NOTE: this configuration of     RPATH/RUNPATH for a privileged program is apparently     very uncommon most likely, no such program is shipped     with any common Linux distribution(CVE-2017-16997)

  - Stack-based buffer overflow in the clntudp_call     function in sunrpc/clnt_udp.c in the GNU C Library (aka     glibc or libc6) allows remote servers to cause a denial     of service (crash) or possibly unspecified other impact     via a flood of crafted ICMP and UDP     packets.(CVE-2016-4429)

  - Integer overflow in the strxfrm function in the GNU C     Library (aka glibc or libc6) before 2.21 allows     context-dependent attackers to cause a denial of     service (crash) or possibly execute arbitrary code via     a long string, which triggers a stack-based buffer     overflow.(CVE-2015-8982)

  - A buffer overflow has been discovered in the GNU C     Library (aka glibc or libc6) in the
    __mempcpy_avx512_no_vzeroupper function when particular     conditions are met. An attacker could use this     vulnerability to cause a denial of service or     potentially execute code.(CVE-2018-11237)

  - The posix_spawn_file_actions_addopen function in glibc     before 2.20 does not copy its path argument in     accordance with the POSIX specification, which allows     context-dependent attackers to trigger use-after-free     vulnerabilities.(CVE-2014-4043)

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 Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3759-1 advisory.

    Aldy Hernandez discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use     this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2016-4429)

    It was discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this     issue to cause a denial of service. (CVE-2018-14622)

    It was discovered that libtirpc incorrectly handled certain strings. An attacker could possibly use this     issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2017-8779)

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

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

This update for glibc fixes the following issues :

  - glob-altdirfunc.patch: Do not copy d_name field of     struct dirent (CVE-2016-1234, boo#969727, BZ #19779)

  - nss-dns-memleak-2.patch: fix memory leak in
    _nss_dns_gethostbyname4_r (boo#973010)

  - nss-dns-getnetbyname.patch: fix stack overflow in
    _nss_dns_getnetbyname_r (CVE-2016-3075, boo#973164, BZ     #19879)

  - getaddrinfo-hostent-conv-stack-overflow.patch:
    getaddrinfo stack overflow in hostent conversion     (CVE-2016-3706, boo#980483, BZ #20010)

  - clntudp-call-alloca.patch: do not use alloca in     clntudp_call (CVE-2016-4429, boo#980854, BZ #20112)

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

  - Stack-based buffer overflow in the clntudp_call     function in sunrpc/clnt_udp.c in the GNU C Library (aka     glibc or libc6) allows remote servers to cause a denial     of service (crash) or possibly unspecified other impact     via a flood of crafted ICMP and UDP     packets.(CVE-2016-4429)

  - Integer overflow in the strxfrm function in the GNU C     Library (aka glibc or libc6) before 2.21 allows     context-dependent attackers to cause a denial of     service (crash) or possibly execute arbitrary code via     a long string, which triggers a stack-based buffer     overflow.(CVE-2015-8982)

  - The posix_spawn_file_actions_addopen function in glibc     before 2.20 does not copy its path argument in     accordance with the POSIX specification, which allows     context-dependent attackers to trigger use-after-free     vulnerabilities.(CVE-2014-4043)

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
92145	Fedora 23 : glibc (2016-b2dfb591cd)	Nessus	Fedora Local Security Checks	2016/7/14	2026/2/2	medium
126294	EulerOS 2.0 SP5 : glibc (EulerOS-SA-2019-1667)	Nessus	Huawei Local Security Checks	2019/6/27	2025/11/20	high
117331	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : libtirpc vulnerabilities (USN-3759-1)	Nessus	Ubuntu Local Security Checks	2018/9/6	2025/9/3	high
91534	openSUSE Security Update : glibc (openSUSE-2016-699)	Nessus	SuSE Local Security Checks	2016/6/9	2021/1/19	high
126849	EulerOS 2.0 SP2 : glibc (EulerOS-SA-2019-1721)	Nessus	Huawei Local Security Checks	2019/7/22	2025/11/20	high

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