CVE-2021-27212
HIGH7.5EPSS 25.1%openldap - security update
Published: 2/14/2021Modified: 4/28/2026
Description
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.
Affected packages (5)
- Alpine/openldapfrom 0, < 2.4.50-r2
- Bitnami/openldapfrom 0, < 2.4.58
- Debian/openldapfrom 0, < 2.4.57+dfsg-2
- Debian/openldapfrom 0, < 2.4.44+dfsg-5+deb9u8
- Debian/openldapfrom 0, < 2.4.47+dfsg-3+deb10u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (11)
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2021-27212
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-27212
- WEBhttps://bugs.openldap.org/show_bug.cgi?id=9454
- WEBhttps://git.openldap.org/openldap/openldap/-/commit/3539fc33212b528c56b716584f2c2994af7c30b0
- WEBhttps://git.openldap.org/openldap/openldap/-/commit/9badb73425a67768c09bcaed1a9c26c684af6c30
- WEBhttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- WEBhttps://lists.debian.org/debian-lts-announce/2021/02/msg00035.html
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2021-27212
- WEBhttps://security.netapp.com/advisory/ntap-20210319-0005/
- WEBhttps://www.debian.org/security/2021/dsa-4860