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USN-5446-2: dpkg vulnerability

30 May 2022

A malicious source package could write files outside the unpack directory.

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Releases

Packages

  • dpkg - Debian package management system

Details

USN-5446-1 fixed a vulnerability in dpkg. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Max Justicz discovered that dpkg incorrectly handled unpacking certain
source packages. If a user or an automated system were tricked into
unpacking a specially crafted source package, a remote attacker could
modify files outside the target unpack directory, leading to a denial of
service or potentially gaining access to the system.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References

Related notices

  • USN-5446-1: libdpkg-dev, libdpkg-perl, dpkg-dev, dpkg, dselect