Debian DSA-3169-1 : eglibc - security update

high Nessus Plugin ID 81448

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several vulnerabilities have been fixed in eglibc, Debian's version of the GNU C library :

- CVE-2012-3406 The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not 'properly restrict the use of' the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.

- CVE-2013-7424 An invalid free flaw was found in glibc's getaddrinfo() function when used with the AI_IDN flag. A remote attacker able to make an application call this function could use this flaw to execute arbitrary code with the permissions of the user running the application. Note that this flaw only affected applications using glibc compiled with libidn support.

- CVE-2014-4043 The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-free vulnerabilities.

- CVE-2014-9402 The getnetbyname function in glibc 2.21 or earlier will enter an infinite loop if the DNS backend is activated in the system Name Service Switch configuration, and the DNS resolver receives a positive answer while processing the network name.

- CVE-2015-1472 / CVE-2015-1473 Under certain conditions wscanf can allocate too little memory for the to-be-scanned arguments and overflow the allocated buffer. The incorrect use of '__libc_use_alloca (newsize)' caused a different (and weaker) policy to be enforced which could allow a denial of service attack.

Solution

Upgrade the eglibc packages.

For the stable distribution (wheezy), these issues are fixed in version 2.13-38+deb7u8 of the eglibc package.

Plugin Details

Severity: High

ID: 81448

File Name: debian_DSA-3169.nasl

Version: 1.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/24/2015

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/23/2015

Reference Information

CVE: CVE-2012-3406, CVE-2013-7424, CVE-2014-4043, CVE-2014-9402, CVE-2015-1472, CVE-2015-1473

BID: 54374, 68006, 71670, 72428, 72499, 72710

DSA: 3169

Detections

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