Debian DSA-3323-1 : icu - security update

Critical Nessus Plugin ID 85162

Synopsis

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

Description

Several vulnerabilities were discovered in the International Components for Unicode (ICU) library.

- CVE-2014-8146 The Unicode Bidirectional Algorithm implementation does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.

- CVE-2014-8147 The Unicode Bidirectional Algorithm implementation uses an integer data type that is inconsistent with a header file, which allows remote attackers to cause a denial of service (incorrect malloc followed by invalid free) or possibly execute arbitrary code via crafted text.

- CVE-2015-4760 The Layout Engine was missing multiple boundary checks.
These could lead to buffer overflows and memory corruption. A specially crafted file could cause an application using ICU to parse untrusted font files to crash and, possibly, execute arbitrary code.

Additionally, it was discovered that the patch applied to ICU in DSA-3187-1 for CVE-2014-6585 was incomplete, possibly leading to an invalid memory access. This could allow remote attackers to disclose portion of private memory via crafted font files.

Solution

Upgrade the icu packages.

For the oldstable distribution (wheezy), these problems have been fixed in version 4.8.1.1-12+deb7u3.

For the stable distribution (jessie), these problems have been fixed in version 52.1-8+deb8u2.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=778511

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=784773

https://security-tracker.debian.org/tracker/CVE-2014-8146

https://security-tracker.debian.org/tracker/CVE-2014-8147

https://security-tracker.debian.org/tracker/CVE-2015-4760

https://security-tracker.debian.org/tracker/CVE-2014-6585

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

https://packages.debian.org/source/jessie/icu

https://www.debian.org/security/2015/dsa-3323

Plugin Details

Severity: Critical

ID: 85162

File Name: debian_DSA-3323.nasl

Version: 2.8

Type: local

Agent: unix

Published: 2015/08/03

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:icu, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/08/01

Reference Information

CVE: CVE-2014-6585, CVE-2014-8146, CVE-2014-8147, CVE-2015-4760

DSA: 3323