Auth bypass in Lemonldap-Ng Lemonldap\
CVE-2023-28862
An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Lemonldap-Ng Lemonldap\ — versions \
- Lemonldap-Ng Lemonldap\:\:ng
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2896 (Exploit, Patch, Issue Tracking)
- gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/releases/v2.16.1 (Release Notes)
- lists.debian.org/debian-lts-announce/2023/07/msg00018.html (mailing-list)
Frequently asked questions
- What is CVE-2023-28862?
- CVE-2023-28862 is a critical-severity vulnerability in Lemonldap-Ng Lemonldap\, classified under Improper Authentication. CVSS score: 9.8/10. Published 2023-03-31.
- How severe is CVE-2023-28862?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-28862 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.