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AUSCERT External Security Bulletin Redistribution
ESB-2022.2594
USN-5446-1: dpkg vulnerability
27 May 2022
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AusCERT Security Bulletin Summary
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Product: dpkg
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-1664
Original Bulletin:
https://ubuntu.com/security/notices/USN-5446-1
Comment: CVSS (Max): None available when published
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USN-5446-1: dpkg vulnerability
26 May 2022
A malicious source package could write files outside the unpack directory.
Releases
o Ubuntu 22.04 LTS
o Ubuntu 21.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o 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
o dpkg - 1.21.1ubuntu2.1
o libdpkg-perl - 1.21.1ubuntu2.1
Ubuntu 21.10
o dpkg - 1.20.9ubuntu2.2
o libdpkg-perl - 1.20.9ubuntu2.2
Ubuntu 20.04
o dpkg - 1.19.7ubuntu3.2
o libdpkg-perl - 1.19.7ubuntu3.2
Ubuntu 18.04
o dpkg - 1.19.0.5ubuntu2.4
o libdpkg-perl - 1.19.0.5ubuntu2.4
In general, a standard system update will make all the necessary changes.
References
o CVE-2022-1664
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