In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libyang: NULL pointer dereference in read_yin_leaf() (CVE-2021-28906)

  - libyang: NULL pointer dereference via lysp_stmt_validate_value at lys_parse_mem.c (CVE-2023-26917)

  - In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of     retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of     retval->ext[r]->flags that results in a crash. (CVE-2021-28902)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2022:2922-1 advisory.

  - In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be     NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).
    (CVE-2021-28905)

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

The remote host is affected by the vulnerability described in GLSA-202107-54 (libyang: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in libyang. Please review       the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
199463	RHEL 8 : libyang (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
195699	RHEL 8 : libyang (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
164463	SUSE SLES15 Security Update : libyang (SUSE-SU-2022:2922-1)	Nessus	SuSE Local Security Checks	high
156981	GLSA-202107-54 : libyang: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high

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CVE-2021-28905

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