Use After Free Affecting openldap package, versions <0:2.4.44-5.el7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    89.85% (99th percentile)

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  • Snyk ID SNYK-RHEL7-OPENLDAP-5181832
  • published 26 Jul 2021
  • disclosed 17 May 2017

How to fix?

Upgrade RHEL:7 openldap to version 0:2.4.44-5.el7 or higher.
This issue was patched in RHSA-2017:1852.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openldap package and not the openldap package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

servers/slapd/back-mdb/search.c in OpenLDAP through 2.4.44 is prone to a double free vulnerability. A user with access to search the directory can crash slapd by issuing a search including the Paged Results control with a page size of 0.

CVSS Scores

version 3.1
Expand this section

NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High