Reachable Assertion in OpenLDAP - CVE-2020-25710
Published: November 17, 2020
Vulnerability identifier: #VU48515
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-25710
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenLDAP.org
Affected software:
OpenLDAP
OpenLDAP
Detailed vulnerability 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.
How to mitigate CVE-2020-25710
Install updates from vendor's website.