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USN-5446-2: dpkg vulnerability

30 May 2022

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



  • dpkg - Debian package management system


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.

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.


Related notices

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