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Ubuntu 22.04 & 20.04 Security Advisory: 5550-1 Critical GnuTLS Issues

ubuntu
Calendar Grey August 4, 2022
Dist Ubuntu Esm H88
Several GnuTLS vulnerabilities addressed in Ubuntu impacting various versions. Consult the advisory for comprehensive information.
Several security issues were fixed in GnuTLS.

Summary

Several security issues were fixed in GnuTLS.

Software Description:

- gnutls28: GNU TLS library

Details:

It was discovered that GnuTLS incorrectly handled certain memory

operations. A remote attacker could possibly use this issue to cause GnuTLS

to crash, resulting in a denial of service. This issue only affected Ubuntu

18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-4209)

It was discovered that GnuTLS incorrectly handled the verification of

certain pkcs7 signatures. A remote attacker could use this issue to cause

GnuTLS to crash, resulting in a denial of service, or possibly execute

arbitrary code. (CVE-2022-2509)

Topics%20covered

Topics Covered

security advisory denial of service security issue software update Ubuntu Critical GnuTLS

Update Instructions

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

Ubuntu 22.04 LTS:
  libgnutls30                     3.7.3-4ubuntu1.1

Ubuntu 20.04 LTS:
  libgnutls30                     3.6.13-2ubuntu1.7

Ubuntu 18.04 LTS:
  libgnutls30                     3.5.18-1ubuntu1.6

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

References

https://ubuntu.com/security/notices/USN-5550-1

CVE-2021-4209, CVE-2022-2509

Severity
critical
Lowest
Low
Medium
High
Critical

August 04, 2022

Topics%20covered

Topics Covered

security advisory denial of service security issue software update Ubuntu Critical GnuTLS

Package Information

https://launchpad.net/ubuntu/+source/gnutls28/3.7.3-4ubuntu1.1
https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.7
https://launchpad.net/ubuntu/+source/gnutls28/3.5.18-1ubuntu1.6

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