1. Ubuntu Security Notices
  2. USN-6166-2

USN-6166-2: libcap2 vulnerability

Publication date

19 June 2023

Overview

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

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)

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)

Update instructions

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

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 bionic libcap2 –  1:2.25-1.2ubuntu0.1~esm1  
libcap2-bin –  1:2.25-1.2ubuntu0.1~esm1  
16.04 xenial libcap2 –  1:2.24-12ubuntu0.1~esm1  
libcap2-bin –  1:2.24-12ubuntu0.1~esm1  
14.04 trusty libcap2 –  1:2.24-0ubuntu2+esm1  
libcap2-bin –  1:2.24-0ubuntu2+esm1  

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References

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