Multiple vulnerabilities in OpenLDAP



Published: 2020-11-18
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-25710
CVE-2020-25709
CWE-ID CWE-617
Exploitation vector 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) Reachable Assertion

EUVDB-ID: #VU48515

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-25710

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when processing LDAP requests in slapd within the csnNormalize23() function in schema_init.c. A remote attacker can send a specially crafted packet to the server, trigger an assertion failure and crash the daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4.8 - 2.4.55


CPE2.3 External links

http://bugs.openldap.org/show_bug.cgi?id=9384
http://git.openldap.org/openldap/openldap/-/commit/bdb0d459187522a6063df13871b82ba8dcc6efe2

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Reachable Assertion

EUVDB-ID: #VU48516

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-25709

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion in certificateListValidate() function in schema_init.c. A remote attacker can send specially crafted packet to the slapd daemon, trigger an assertion failure and crash the service.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenLDAP: 2.4.6 - 2.4.55


CPE2.3 External links

http://bugs.openldap.org/show_bug.cgi?id=9383
http://git.openldap.org/openldap/openldap/-/commit/67670f4544e28fb09eb7319c39f404e1d3229e65

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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