nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab).

nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab).

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Please visit https://www.tenable.com/products/tenable-ot for more information.

An issue has been found in libbsd, a library with utility functions from BSD systems. A non-NUL terminated symbol name in the string table might result in an out-of-bounds read.

For Debian 9 stretch, this problem has been fixed in version 0.8.3-1+deb9u1.

We recommend that you upgrade your libbsd packages.

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

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for libbsd fixes the following issues :

  - CVE-2019-20367: Fixed an out-of-bounds read during a     comparison for a symbol names from the string table     (bsc#1160551).

This update was imported from the SUSE:SLE-15:Update update project.

This update for libbsd fixes the following issues :

CVE-2019-20367: Fixed an out-of-bounds read during a comparison for a symbol names from the string table (bsc#1160551).

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

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4243-1 advisory.

    It was discovered that libbsd incorrectly handled certain inputs. An attacker could possibly use this     issue to execute arbitrary code. This issue only affected Ubuntu 14.04 ESM. (CVE-2016-2090)

    It was discovered that libbsd incorrectly handled certain strings. An attacker could possibly use this     issue to access sensitive information. (CVE-2019-20367)

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.

ID	Name	Product	Family	Severity
504373	Siemens SIMATIC S7-1500 Out-of-bounds Read (CVE-2019-20367)	Tenable OT Security	Tenable.ot	critical
146608	Debian DLA-2566-1 : libbsd security update	Nessus	Debian Local Security Checks	critical
136877	openSUSE Security Update : libbsd (openSUSE-2020-679)	Nessus	SuSE Local Security Checks	critical
136791	SUSE SLED15 / SLES15 Security Update : libbsd (SUSE-SU-2020:1298-1)	Nessus	SuSE Local Security Checks	critical
133144	Ubuntu 16.04 LTS / 18.04 LTS : libbsd vulnerabilities (USN-4243-1)	Nessus	Ubuntu Local Security Checks	critical

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