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Ubuntu 20.04 LTS USN-5029-1 Critical: GnuTLS Denial Of Service

ubuntu
Calendar Grey August 2, 2021
Dist Ubuntu Esm H88
OpenSSL flaws addressed in Ubuntu 20.04 LTS. Essential patches deployed to tackle security concerns impacting the toolkit.
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 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.

Topics%20covered

Topics Covered

security advisory denial of service security issue ubuntu gnutls

Update Instructions

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

Ubuntu 20.04 LTS:
  libgnutls30                     3.6.13-2ubuntu1.6

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

References

https://ubuntu.com/security/notices/USN-5029-1

CVE-2021-20231, CVE-2021-20232

Severity
critical
Lowest
Low
Medium
High
Critical

August 02, 2021

Topics%20covered

Topics Covered

security advisory denial of service security issue ubuntu gnutls

Package Information

https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.6

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