CVE-2021-27212

Publication date 14 February 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
openldap 24.10 oracular
Fixed 2.4.57+dfsg-2ubuntu1
24.04 LTS noble
Fixed 2.4.57+dfsg-2ubuntu1
23.10 mantic
Fixed 2.4.57+dfsg-2ubuntu1
23.04 lunar
Fixed 2.4.57+dfsg-2ubuntu1
22.10 kinetic
Fixed 2.4.57+dfsg-2ubuntu1
22.04 LTS jammy
Fixed 2.4.57+dfsg-2ubuntu1
21.10 impish
Fixed 2.4.57+dfsg-2ubuntu1
21.04 hirsute
Fixed 2.4.57+dfsg-2ubuntu1
20.10 groovy
Fixed 2.4.53+dfsg-1ubuntu1.4
20.04 LTS focal
Fixed 2.4.49+dfsg-2ubuntu1.7
18.04 LTS bionic
Fixed 2.4.45+dfsg-1ubuntu1.10
16.04 LTS xenial
Fixed 2.4.42+dfsg-2ubuntu3.13
14.04 LTS trusty Ignored end of ESM support, was needed

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openldap

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4744-1
    • OpenLDAP vulnerability
    • 22 February 2021

Other references