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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200411-09] shadow: Unauthorized modification of account information


Vulnerability Assessment Details

[GLSA-200411-09] shadow: Unauthorized modification of account information

Vulnerability Assessment Summary
shadow: Unauthorized modification of account information

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200411-09
(shadow: Unauthorized modification of account information)


Martin Schulze reported a flaw in the passwd_check() function in
"libmisc/pwdcheck.c" which is used by chfn and chsh.

Impact

A logged-in local user with an expired password may be able to use chfn and
chsh to change his standard shell or GECOS information (full name, phone
number...) without being required to change his password.

Workaround

There is no known workaround at this time.

References:
http://ftp.pld.org.pl/software/shadow/NEWS
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1001


Solution:
All shadow users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.0.5-r1"


Network Security Threat Level: Low


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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