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Debian DLA-561-1 : uclibc security update

high Nessus Plugin ID 92568

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Synopsis

The remote Debian host is missing a security update.

Description

Several vulnerabilities have been discovered in uClibc, an implementation of the standard C library that is much smaller than glibc, which makes it useful for embedded systems.

CVE-2016-2224 Fix possible denial of service via a specially crafted DNS reply that could cause an infinite loop. CVE-2016-2225 Fix possible denial of service via specially crafted packet that will make the parser in libc/inet/resolv.c terminate early.

CVE-2016-6264 It was found that 'BLT' instruction in libc/string/arm/memset.S checks for signed values. If the parameter of memset is negative, then value added to the PC will be large. An attacker that controls the length parameter of memset can also control the value of PC register.

For Debian 7 'Wheezy', these problems have been fixed in version 0.9.32-1+deb7u1.

We recommend that you upgrade your uclibc packages.

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.

Solution

Upgrade the affected uclibc-source package.

See Also

https://lists.debian.org/debian-lts-announce/2016/07/msg00023.html

https://packages.debian.org/source/wheezy/uclibc

Plugin Details

Severity: High

ID: 92568

File Name: debian_DLA-561.nasl

Version: 2.7

Type: local

Agent: unix

Published: 7/27/2016

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:uclibc-source, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/26/2016

Reference Information

CVE: CVE-2016-2224, CVE-2016-2225, CVE-2016-6264