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.
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)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
libcap2
-
1:2.25-1.2ubuntu0.1~esm1
Available with Ubuntu Pro
-
libcap2-bin
-
1:2.25-1.2ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 16.04
-
libcap2
-
1:2.24-12ubuntu0.1~esm1
Available with Ubuntu Pro
-
libcap2-bin
-
1:2.24-12ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 14.04
-
libcap2
-
1:2.24-0ubuntu2+esm1
Available with Ubuntu Pro
-
libcap2-bin
-
1:2.24-0ubuntu2+esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-6166-1: libcap2, libcap-dev, libpam-cap, libcap2-bin