[USN-5108-1] libntlm vulnerability

Spyros Seimenis spyros.seimenis at canonical.com
Fri Oct 8 16:04:07 UTC 2021

Ubuntu Security Notice USN-5108-1
October 08, 2021

libntlm vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS


libntlm could be made to crash or possibly execute arbitrary code.

Software Description:
- libntlm: NTLM authentication library


It was discovered that Libntlm incorrectly handled specially crafted NTML
requests. An attacker could possibly use this issue to cause a denial of
service or another unspecified impact.

Update instructions:

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

Ubuntu 20.04 LTS:
  libntlm0                        1.5-2ubuntu0.1

Ubuntu 18.04 LTS:
  libntlm0                        1.4-8ubuntu0.1

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


Package Information:
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