GLSA-200803-20 : International Components for Unicode: Multiple vulnerabilities

high Nessus Plugin ID 31446

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-200803-20 (International Components for Unicode: Multiple vulnerabilities)

Will Drewry (Google Security) reported a vulnerability in the regular expression engine when using back references to capture \\0 characters (CVE-2007-4770). He also found that the backtracking stack size is not limited, possibly allowing for a heap-based buffer overflow (CVE-2007-4771).
Impact :

A remote attacker could submit specially crafted regular expressions to an application using the library, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application or a Denial of Service.
Workaround :

There is no known workaround at this time.

Solution

All International Components for Unicode users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/icu-3.8.1-r1'

See Also

https://security.gentoo.org/glsa/200803-20

Plugin Details

Severity: High

ID: 31446

File Name: gentoo_GLSA-200803-20.nasl

Version: 1.16

Type: local

Published: 3/13/2008

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2008

Reference Information

CVE: CVE-2007-4770, CVE-2007-4771

CWE: 399

GLSA: 200803-20