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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200611-01] Screen: UTF-8 character handling vulnerability

Vulnerability Assessment Details

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

Vulnerability Assessment Summary
Screen: UTF-8 character handling vulnerability

Detailed Explanation for this Vulnerability Assessment
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 rights 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.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4573

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

Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

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