USN-5029-1: GnuTLS vulnerabilities

Releases

• Ubuntu 20.04 LTS

Packages

• gnutls28 - GNU TLS library

Details

It was discovered that GnuTLS incorrectly handled sending certain
extensions when being used as a client. A remote attacker could use this
issue to cause GnuTLS to crash, resulting in a denial of service, or
possibly execute arbitrary code.

Update instructions

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

Ubuntu 20.04

• libgnutls30 - 3.6.13-2ubuntu1.6

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

References

• CVE-2021-20232
• CVE-2021-20231