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USN-6166-2: libcap2 vulnerability

19 June 2023

libcap could be made to crash or possibly execute arbitrary code if it received a specially crafted input.

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Releases

Packages

  • libcap2 - POSIX 1003.1e capabilities (library)

Details

USN-6166-1 fixed a vulnerability in libcap2. This update provides
the corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM
and Ubuntu 18.04 ESM.

Original advisory details:

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 18.04
Ubuntu 16.04
Ubuntu 14.04

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

References

Related notices

  • USN-6166-1: libpam-cap, libcap-dev, libcap2-bin, libcap2