[USN-5446-1] dpkg vulnerability


========================================================================== Ubuntu Security Notice USN-5446-1 May 26, 2022
dpkg vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 22.04 LTS – Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
Summary:
A malicious source package could write files outside the unpack directory.
Software Description: – dpkg: Debian package management system
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 22.04 LTS: dpkg 1.21.1ubuntu2.1 libdpkg-perl 1.21.1ubuntu2.1
Ubuntu 21.10: dpkg 1.20.9ubuntu2.2 libdpkg-perl 1.20.9ubuntu2.2
Ubuntu 20.04 LTS: dpkg 1.19.7ubuntu3.2 libdpkg-perl 1.19.7ubuntu3.2
Ubuntu 18.04 LTS: dpkg 1.19.0.5ubuntu2.4 libdpkg-perl 1.19.0.5ubuntu2.4
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5446-1 CVE-2022-1664
Package Information: launchpad.net/ubuntu/+source/dpkg/1.21.1ubuntu2.1 launchpad.net/ubuntu/+source/dpkg/1.20.9ubuntu2.2 launchpad.net/ubuntu/+source/dpkg/1.19.7ubuntu3.2 launchpad.net/ubuntu/+source/dpkg/1.19.0.5ubuntu2.4