USN-5446-2: dpkg vulnerability
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Ubuntu Security Notice USN-5446-2
May 30, 2022
dpkg vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
A malicious source package could write files outside the unpack directory.
Software Description:
- 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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
dpkg 1.18.4ubuntu1.7+esm1
libdpkg-perl 1.18.4ubuntu1.7+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5446-2
https://ubuntu.com/security/notices/USN-5446-1
CVE-2022-1664
--oyUTqETQ0mS9luUI
A dpkg security update has been released for Ubuntu Linux 16.04 ESM.
