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USN-6499-1: GnuTLS vulnerability

21 November 2023

GnuTLS could be made to expose sensitive information over the network.

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Releases

Packages

Details

It was discovered that GnuTLS had a timing side-channel when handling
certain RSA-PSK key exchanges. A remote attacker could possibly use this
issue to recover sensitive information.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04

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

References

Related notices

  • USN-6499-2: gnutls28, libgnutlsxx28, libgnutls-dane0, gnutls-doc, libgnutls-openssl27, libgnutls30, gnutls-bin, libgnutls28-dev

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Further reading