Improper authorization in OpenLDAP



Published: 2019-07-30
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-13057
CVE-2019-13565
CWE-ID CWE-285
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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OpenLDAP
Server applications / Directory software, identity management

Vendor OpenLDAP.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authorization

EUVDB-ID: #VU19561

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-13057

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4.3 - 2.4.47


CPE2.3 External links

http://www.openldap.org/its/?findid=9038
http://www.openldap.org/lists/openldap-announce/201907/msg00001.html

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Improper Authorization

EUVDB-ID: #VU19562

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-13565

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4.3 - 2.4.47


CPE2.3 External links

http://www.openldap.org/its/index.cgi/?findid=9052
http://www.openldap.org/lists/openldap-announce/201907/msg00001.html

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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