==========================================================================
Ubuntu Security Notice USN-6472-1
November 07, 2023

gsl vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS (Available with Ubuntu Pro)
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

GNU Scientific Library could be made to crash or execute arbitrary code if it
received specially crafted input.

Software Description:
- gsl: A modern numerical library for C and C++ programmers

Details:

It was discovered that GNU Scientific Library incorrectly handled certain
inputs. If a user or an automated system were tricked into opening a specially
crafted input file, a remote attacker could possibly use this issue to cause a
denial of service or execute arbitrary code.

Update instructions:

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

Ubuntu 23.04:
   gsl-bin                         2.7.1+dfsg-3ubuntu0.23.04.1
   libgsl-dev                      2.7.1+dfsg-3ubuntu0.23.04.1
   libgsl27                        2.7.1+dfsg-3ubuntu0.23.04.1
   libgslcblas0                    2.7.1+dfsg-3ubuntu0.23.04.1

Ubuntu 22.04 LTS (Available with Ubuntu Pro):
   gsl-bin                         2.7.1+dfsg-3ubuntu0.22.04.1~esm1
   libgsl-dev                      2.7.1+dfsg-3ubuntu0.22.04.1~esm1
   libgsl27                        2.7.1+dfsg-3ubuntu0.22.04.1~esm1
   libgslcblas0                    2.7.1+dfsg-3ubuntu0.22.04.1~esm1

Ubuntu 20.04 LTS:
   gsl-bin                         2.5+dfsg-6+deb10u1build0.20.04.1
   libgsl-dev                      2.5+dfsg-6+deb10u1build0.20.04.1
   libgsl23                        2.5+dfsg-6+deb10u1build0.20.04.1
   libgslcblas0                    2.5+dfsg-6+deb10u1build0.20.04.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   gsl-bin                         2.4+dfsg-6ubuntu0.1~esm1
   libgsl-dev                      2.4+dfsg-6ubuntu0.1~esm1
   libgsl23                        2.4+dfsg-6ubuntu0.1~esm1
   libgslcblas0                    2.4+dfsg-6ubuntu0.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   gsl-bin                         2.1+dfsg-2ubuntu0.1~esm1
   libgsl-dev                      2.1+dfsg-2ubuntu0.1~esm1
   libgsl2                         2.1+dfsg-2ubuntu0.1~esm1

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

References:
   https://ubuntu.com/security/notices/USN-6472-1
   CVE-2020-35357

Package Information:
   https://launchpad.net/ubuntu/+source/gsl/2.7.1+dfsg-3ubuntu0.23.04.1
   https://launchpad.net/ubuntu/+source/gsl/2.5+dfsg-6+deb10u1build0.20.04.1