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USN-6166-1: libcap2 vulnerabilities

14 June 2023

Several security issues were fixed in libcap2.

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Releases

Packages

  • libcap2 - POSIX 1003.1e capabilities (library)

Details

David Gstir discovered that libcap2 incorrectly handled certain return
codes. An attacker could possibly use this issue to cause libcap2 to
consume memory, leading to a denial of service. (CVE-2023-2602)

Richard Weinberger discovered that libcap2 incorrectly handled certain long
input strings. An attacker could use this issue to cause libcap2 to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2023-2603)

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 23.04
Ubuntu 22.10
Ubuntu 22.04
Ubuntu 20.04

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

Related notices

  • USN-6166-2: libpam-cap, libcap2, libcap-dev, libcap2-bin