- Vulnerability/
- USN-6499-1
USN-6499-1: GnuTLS vulnerability
First published: Tue Nov 21 2023(Updated: )
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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libgnutls30 | <3.8.1-4ubuntu1.1 | 3.8.1-4ubuntu1.1 |
| Ubuntu | =23.10 | |
| All of | ||
| ubuntu/libgnutls30 | <3.7.8-5ubuntu1.1 | 3.7.8-5ubuntu1.1 |
| Ubuntu | =23.04 | |
| All of | ||
| ubuntu/libgnutls30 | <3.7.3-4ubuntu1.3 | 3.7.3-4ubuntu1.3 |
| Ubuntu | =22.04 | |
| All of | ||
| ubuntu/libgnutls30 | <3.6.13-2ubuntu1.9 | 3.6.13-2ubuntu1.9 |
| Ubuntu | =20.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2023-5981
- https://ubuntu.com/security/notices/USN-6499-2
- https://launchpad.net/ubuntu/+source/gnutls28/3.8.1-4ubuntu1.1
- https://launchpad.net/ubuntu/+source/gnutls28/3.7.8-5ubuntu1.1
- https://launchpad.net/ubuntu/+source/gnutls28/3.7.3-4ubuntu1.3
- https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.9
- https://ubuntu.com/security/notices/USN-6499-1 (Advisory)
Frequently Asked Questions
What is the severity of USN-6499-1?
The severity of USN-6499-1 is classified as a medium risk due to the potential for a remote attacker to recover sensitive information through a timing side-channel.
How do I fix USN-6499-1?
To fix USN-6499-1, you should upgrade the affected libgnutls30 package to the recommended version according to your Ubuntu release.
Which versions of Ubuntu are affected by USN-6499-1?
USN-6499-1 affects Ubuntu versions 23.10, 23.04, 22.04, and 20.04 using vulnerable versions of libgnutls30.
What type of vulnerability is USN-6499-1?
USN-6499-1 is a timing side-channel vulnerability related to RSA-PSK key exchanges in GnuTLS.
Is there a known exploit for USN-6499-1?
There is currently no known public exploit for USN-6499-1, but the vulnerability could be theoretically exploited by a remote attacker.
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