GLSA-200611-01 : Screen: UTF-8 character handling vulnerability

Low Nessus Plugin ID 22939


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


The remote host is affected by the vulnerability described in GLSA-200611-01 (Screen: UTF-8 character handling vulnerability)

cstone and Richard Felker discovered a flaw in Screen's UTF-8 combining character handling.
Impact :

The vulnerability can be exploited by writing a special string of characters to a Screen window. A remote attacker could cause a Denial of Service or possibly execute arbitrary code with the privileges of the user running Screen through a program being run inside a Screen session, such as an IRC client or a mail client.
Workaround :

There is no known workaround at this time.


All Screen users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-misc/screen-4.0.3'

See Also

Plugin Details

Severity: Low

ID: 22939

File Name: gentoo_GLSA-200611-01.nasl

Version: $Revision: 1.12 $

Type: local

Published: 2006/11/06

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.6

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

Vulnerability Information

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

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

Patch Publication Date: 2006/11/03

Vulnerability Publication Date: 2006/10/23

Reference Information

CVE: CVE-2006-4573

OSVDB: 29905

GLSA: 200611-01