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

High Nessus Plugin ID 31446


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


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.


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

Plugin Details

Severity: High

ID: 31446

File Name: gentoo_GLSA-200803-20.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2008/03/13

Modified: 2017/12/13

Dependencies: 12634

Risk Information

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

Temporal Vector: CVSS2#E:U/RL:OF/RC: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 Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2008/03/11

Reference Information

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

OSVDB: 41189, 41190

GLSA: 200803-20

CWE: 399