CVE-2023-38994
An issue in Univention UCS v.5.0 allows a local attacker to execute arbitrary code and gain...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2023-38994- CVSS 3.1
- 7.9 High
CVSS:3.1/AC:L/AV:L/A:N/C:H/I:H/PR:H/S:C/UI:N - Updated
- 2026-11-02
EUVDEUVD-2023-42751
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.
- Record
EUVD-2023-42751- CVSS 3.1
- 7.9 High
CVSS:3.1/AC:L/AV:L/A:N/C:H/I:H/PR:H/S:C/UI:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-79jx-q243-6wc7
An issue in Univention UCS v.5.0 allows a local attacker to execute arbitrary code and gain...
An issue in Univention UCS v.5.0 allows a local attacker to execute arbitrary code and gain privileges via the check_univention_joinstatus function.
- Record
GHSA-79jx-q243-6wc7- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-668
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-38994- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-668
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-38994 is a high vulnerability (CVSS 7.9) in Univention Corporate Server, published October 31, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. No source names a fixed version.
References
forge.univention.org/bugzilla/show_bug.cgi?id=56324
drive-byte.de/en/blog/simple-yet-effective-the-story-of-some-simple-bugs-that-led-to-the-complete-compromise-of-a-network
raeph123.github.io/BlogPosts/Univention/Simple_yet_effective_The_story_of_some_simple_bugs_that_led_to_the_complete_compromise_of_a_network_en.html
nvd.nist.gov/vuln/detail/CVE-2023-38994
github.com/advisories/GHSA-79jx-q243-6wc7