CVE-2023-38201 Keylime: challenge-response protocol bypass during agent registration
Attackers can bypass challenge-response checks to impersonate agents, compromising registrar database integrity and hiding machine status.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-38201?
CVE-2023-38201 is a medium-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 25 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.
Weakness: CWE-639
Which versions are affected by CVE-2023-38201?
3 open source packages ship an affected version, including keylime. It affects 9 products.
| Package | Affected | Fixed in |
|---|---|---|
keylime PyPI | All versions | 7.5.0 |
keylime PyPI | All versions | 7.5.0 |
keylime PyPI | All versions | 7.5.0 |
Linux distribution packages (4)
keylime SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 6.3.2-150400.4.20.1 |
keylime SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 6.3.2-150400.4.20.1 |
keylime openSUSE:Leap 15.4 | All versions | 6.3.2-150400.4.20.1 |
keylime openSUSE:Leap 15.5 | All versions | 6.3.2-150400.4.20.1 |
Products include Fedoraproject Fedora, Keylime Keylime, Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Ibm Z Systems Eus and 3 more.
How do I fix CVE-2023-38201?
Upgrade keylime to 7.5.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-38201 being exploited?
There is no known exploitation of CVE-2023-38201 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as GHSA-f4r5-q63f-gcww, PYSEC-2023-160, SUSE-SU-2023:3525-1, openSUSE-SU-2024:13287-1.