Vulnerability in Univention Corporate Server
CVE-2023-38994
The 'check_univention_joinstatus' prometheus monitoring script (and other scripts) in UCS 5.0-5 revealed the LDAP plaintext password of the machine account in the process list allowing attackers with local ssh access to gain higher privileges and perform followup attacks. By default, the configuration of UCS does not allow local ssh access for regular users.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (27.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Univention Corporate Server — versions 5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- forge.univention.org/bugzilla/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.drive-byte.de/en/blog/simple-yet-effective-the-story-of-some-simple-bugs-th… (Technical Description, Exploit, Third Party Advisory)
- forge.univention.org/bugzilla/show_bug.cgi (Issue Tracking, Vendor Advisory)
- raeph123.github.io/BlogPosts/Univention/Simple_yet_effective_The_story_of_some_…
Frequently asked questions
- What is CVE-2023-38994?
- CVE-2023-38994 is a high-severity vulnerability in Univention Corporate Server, classified under Exposure of Resource to Wrong Sphere. CVSS score: 7.9/10. Published 2023-10-31.
- How severe is CVE-2023-38994?
- High severity. CVSS v3 base score is 7.9 out of 10.
- Is CVE-2023-38994 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.