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GLSA-201607-13 : libbsd: Arbitrary code execution

critical Nessus Plugin ID 92483

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-201607-13 (libbsd: Arbitrary code execution)

 libbsd contains a buffer overflow in the fgetwln() function. An if statement, which is responsible for checking the necessity to reallocate memory in the target buffer, is off by one therefore an out of bounds write occurs.
 Impact :

 Remote attackers could potentially execute arbitrary code with the privileges of the process.
 Workaround :

 There is no known workaround at this time.

Solution

All libbsd users should upgrade to the latest version:
 # emerge --sync # emerge --ask --verbose --oneshot '>=dev-libs/libbsd-0.8.2'

See Also

https://security.gentoo.org/glsa/201607-13

Plugin Details

Severity: Critical

ID: 92483

File Name: gentoo_GLSA-201607-13.nasl

Version: 2.4

Type: local

Published: 7/21/2016

Updated: 1/11/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libbsd, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 7/20/2016

Reference Information

CVE: CVE-2016-2090

GLSA: 201607-13