Vulnerability in Openldap
CVE-2021-27212
In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.661 (99.3th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.641 · newest: 0.661 · change: +0.020
Affected products
- Openldap — versions 2.5.0, 2.5.1
- Debian Linux — versions 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.openldap.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7… (Patch, Vendor Advisory)
- git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684a… (Patch, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2021/02/msg00035.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4860 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210319-0005/ (Third Party Advisory)
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508… (mailing-list)
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698… (mailing-list)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2021-27212?
- CVE-2021-27212 is a high-severity vulnerability in Openldap, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-02-14.
- How severe is CVE-2021-27212?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-27212 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.