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Debian 4.0 DSA-1709-1 Critical: Shadow Privilege Escalation Risk

debian
Calendar Grey January 21, 2009
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The Debian Security Announcement DSA-1709-1 highlights a critical vulnerability within the shadow package, which compromises the integrity of the login utility.
Paul Szabo discovered that login, the system login tool, did not correctly handle symlinks while setting up tty permissions

Summary

For the stable distribution (etch), this problem has been fixed in
version 4.0.18.1-7+etch1.

For the unstable distribution (sid), this problem has been fixed in
version 4.1.1-6.

We recommend that you upgrade your shadow package.

Upgrade instructions
- --------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 4.0 alias etch

Source archives:

Size/MD5 checksum: 2354234 3f54eaa3a35e7c559f4def92e9957581
Size/MD5 checksum: 297817 b78d9d738765da65a6b55dea102569c3
Size/MD5 checksum: 1406 ec01ac54e482ea552fdae5753d6c1745

alpha architecture (DEC Alpha)

Size/MD5 checksum: 810680 329e1cd5ad019d3984411b1a...

Read the Full Advisory

Severity
critical
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