USN-6947-1: Kerberos vulnerabilities

8 August 2024

Kerberos could be made to crash if it received specially crafted input.

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Releases

Packages

  • krb5 - MIT Kerberos Network Authentication Protocol

Details

It was discovered that Kerberos incorrectly handled GSS message tokens
where an unwrapped token could appear to be truncated. An attacker
could possibly use this issue to cause a denial of service.
(CVE-2024-37370)

It was discovered that Kerberos incorrectly handled GSS message tokens
when sent a token with invalid length fields. An attacker could possibly
use this issue to cause a denial of service. (CVE-2024-37371)

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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.

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Update instructions

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

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

References

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Further reading