Xenstore: a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain.

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

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-07438e12df advisory.

    x86: unintended memory sharing between guests [XSA-412, CVE-2022-42327]     Xenstore: Guests can crash xenstored [XSA-414, CVE-2022-42309]     Xenstore: Guests can create orphaned Xenstore nodes [XSA-415,     CVE-2022-42310]     Xenstore: guests can let run xenstored out of memory [XSA-326,     CVE-2022-42311, CVE-2022-42312, CVE-2022-42313, CVE-2022-42314,     CVE-2022-42315, CVE-2022-42316, CVE-2022-42317, CVE-2022-42318]     Xenstore: Guests can cause Xenstore to not free temporary memory     [XSA-416, CVE-2022-42319]     Xenstore: Guests can get access to Xenstore nodes of deleted domains     [XSA-417, CVE-2022-42320]     Xenstore: Guests can crash xenstored via exhausting the stack     [XSA-418, CVE-2022-42321]     Xenstore: Cooperating guests can create arbitrary numbers of nodes     [XSA-419, CVE-2022-42322, CVE-2022-42323]     Oxenstored 32->31 bit integer truncation issues [XSA-420, CVE-2022-42324]     Xenstore: Guests can create arbitrary number of nodes via transactions     [XSA-421, CVE-2022-42325, CVE-2022-42326]

Tenable has extracted the preceding description block directly from the Fedora 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause     xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored     or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by     the guest e.g. by exceeding the quota value of maximum nodes per domain. (CVE-2022-42309)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-9f51d13fa3 advisory.

    x86: Multiple speculative security issues [XSA-422, CVE-2022-23824]

    ----

    x86: unintended memory sharing between guests [XSA-412, CVE-2022-42327]     Xenstore: Guests can crash xenstored [XSA-414, CVE-2022-42309]     Xenstore: Guests can create orphaned Xenstore nodes [XSA-415,     CVE-2022-42310]     Xenstore: guests can let run xenstored out of memory [XSA-326,     CVE-2022-42311, CVE-2022-42312, CVE-2022-42313, CVE-2022-42314,     CVE-2022-42315, CVE-2022-42316, CVE-2022-42317, CVE-2022-42318]     Xenstore: Guests can cause Xenstore to not free temporary memory     [XSA-416, CVE-2022-42319]     Xenstore: Guests can get access to Xenstore nodes of deleted domains     [XSA-417, CVE-2022-42320]     Xenstore: Guests can crash xenstored via exhausting the stack     [XSA-418, CVE-2022-42321]     Xenstore: Cooperating guests can create arbitrary numbers of nodes     [XSA-419, CVE-2022-42322, CVE-2022-42323]     Oxenstored 32->31 bit integer truncation issues [XSA-420, CVE-2022-42324]     Xenstore: Guests can create arbitrary number of nodes via transactions     [XSA-421, CVE-2022-42325, CVE-2022-42326]

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

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

ID	名稱	產品	系列	已發布	已更新	嚴重性
168021	Xenstore: Guests can crash xenstored (XSA-414)	Nessus	Misc.	2022/11/21	2022/11/22	high
169223	Fedora 36 : xen (2022-07438e12df)	Nessus	Fedora Local Security Checks	2022/12/23	2024/11/14	high
250511	Linux Distros Unpatched Vulnerability : CVE-2022-42309	Nessus	Misc.	2025/8/18	2026/7/29	high
211096	Fedora 37 : xen (2022-9f51d13fa3)	Nessus	Fedora Local Security Checks	2024/11/14	2024/11/14	high

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