SB2019073001 - Improper authorization in OpenLDAP

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Main Vulnerability Database SB2019073001

SB2019073001 - Improper authorization in OpenLDAP

Published: July 30, 2019

Security Bulletin ID SB2019073001
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Adjecent network
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper Authorization (CVE-ID: CVE-2019-13057)

CWE-ID: CWE-285 - Improper Authorization

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect processing of rootDN delegation in the OpenLDAP multi-tenant deployments. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations.


2) Improper Authorization (CVE-ID: CVE-2019-13565)

CWE-ID: CWE-285 - Improper Authorization

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to incorrect processing of SASL authentication and session encryption in OpenLDAP. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections, allowing to bypass ACLs and obtain access by performing simple binds.

Remediation

Install update from vendor's website.

References