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Debian Security Advisory DSA 2164-1 (shadow)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to shadow announced via advisory DSA 2164-1.
Insight
Insight
Kees Cook discovered that the chfn and chsh utilities do not properly sanitize user input that includes newlines. An attacker could use this 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.
Solution
Solution
We recommend that you upgrade your shadow packages.