Headline
Ubuntu Security Notice USN-5901-1
Ubuntu Security Notice 5901-1 - Hubert Kario discovered that GnuTLS had a timing side-channel when handling certain RSA messages. A remote attacker could possibly use this issue to recover sensitive information.
==========================================================================
Ubuntu Security Notice USN-5901-1
February 28, 2023
gnutls28 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
GnuTLS could be made to expose sensitive information over the network.
Software Description:
- gnutls28: GNU TLS library
Details:
Hubert Kario discovered that GnuTLS had a timing side-channel when handling
certain RSA messages. A remote attacker could possibly use this issue to
recover sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.10:
libgnutls30 3.7.7-2ubuntu2.1
Ubuntu 22.04 LTS:
libgnutls30 3.7.3-4ubuntu1.2
Ubuntu 20.04 LTS:
libgnutls30 3.6.13-2ubuntu1.8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5901-1
CVE-2023-0361
Package Information:
https://launchpad.net/ubuntu/+source/gnutls28/3.7.7-2ubuntu2.1
https://launchpad.net/ubuntu/+source/gnutls28/3.7.3-4ubuntu1.2
https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.8
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