Linux Security
Linux Security
Linux Security

Debian: DSA-2164-1: shadow security update

Date 15 Feb 2011
137
Posted By LinuxSecurity Advisories
Kees Cook discovered that the chfn and chsh utilities do not properly sanitize user input that includes newlines. An attacker could use this to to corrupt passwd entries and may create users or groups in NIS environments.
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Debian Security Advisory DSA-2164-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                                Nico Golde
February 16, 2011                      https://www.debian.org/security/faq
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Package        : shadow
Vulnerability  : insufficient input sanitization
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2011-0721

Kees Cook discovered that the chfn and chsh utilities do not properly
sanitize user input that includes newlines.  An attacker could use this
to to corrupt passwd entries and may create users or groups in NIS
environments.


Packages in the oldstable distribution (lenny) are not affected by this
problem.

For the stable distribution (squeeze), this problem has been fixed in
version 1:4.1.4.2+svn3283-2+squeeze1.

For the testing (wheezy) and unstable (sid) distributions, this problem
will be fixed soon.

We recommend that you upgrade your shadow packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.

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