In function ext_get_plugin() in libyang <= v1.0.225, it doesn't check whether the value of revision is NULL. If revision is NULL, the operation of strcmp(revision, ext_plugins[u].revision) will lead to a crash.

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 multiple vulnerabilities as referenced in the SUSE-SU-2022:3245-1 advisory.

  - 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)

  - A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem().
    lyxml_parse_elem() function will be called recursively, which will consume stack space and lead to crash.
    (CVE-2021-28903)

  - In function ext_get_plugin() in libyang <= v1.0.225, it doesn't check whether the value of revision is     NULL. If revision is NULL, the operation of strcmp(revision, ext_plugins[u].revision) will lead to a     crash. (CVE-2021-28904)

  - In function read_yin_leaf() 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-2021-28906)

Note that Nessus has not tested for these issues 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
164976	SUSE SLES15 Security Update : libyang (SUSE-SU-2022:3245-1)	Nessus	SuSE Local Security Checks	high
156981	GLSA-202107-54 : libyang: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high

Detections

Analytics

CVE-2021-28904

high

Tenable Plugins

high

high

high

high