A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is not terminated. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlea-2021_1906 advisory.

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

    This advisory is provided by Ctrl IQ, Inc for Rocky Linux systems. For more information about CIQ security     practices, visit https://ciq.com/security.

Tenable has extracted the preceding description block directly from the CIQ 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.

  - A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is     not terminated. Applications that use libyang to parse untrusted input yang files may be vulnerable to     this flaw, which would cause a crash or potentially code execution. (CVE-2019-20397)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3572 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3572-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     September 19, 2023                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libyang     Version        : 0.16.105+really1.0-0+deb10u1     CVE ID         : CVE-2019-20391 CVE-2019-20392 CVE-2019-20393 CVE-2019-20394                      CVE-2019-20395 CVE-2019-20396 CVE-2019-20397 CVE-2019-20398

    Multiple flaws were found in libyang, a parser toolkit for IETF YANG data     modeling. Double frees, invalid memory access and Null pointer dereferences     may cause a denial of service or potentially code execution.

    For Debian 10 buster, these problems have been fixed in version     0.16.105+really1.0-0+deb10u1.

    We recommend that you upgrade your libyang packages.

    For the detailed security status of libyang please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libyang

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian 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	Name	Product	Family	Type	Severity
353743	Rocky Linux 8 [CIQ] Security Update: libyang / libyang-debuginfo / libyang-debugsource Multiple Vulnerabilities (crlea-2021_1906)	Nessus	Rocky Linux Local Security Checks	Local	high
258615	Linux Distros Unpatched Vulnerability : CVE-2019-20397	Nessus	Misc.	Local	high
181648	Debian dla-3572 : libyang-cpp-dev - security update	Nessus	Debian Local Security Checks	Local	high

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CVE-2019-20397

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Tenable Plugins

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