Debian update for openldap

Published: 2020-11-18

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-25709 CVE-2020-25710
CWE-ID	CWE-617
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	openldap (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Reachable Assertion

EUVDB-ID: #VU48516

Risk: Medium

CVSSv4.0: 6.6 [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-2020-25709

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

Update openldap package to version 2.4.47+dfsg-3+deb10u4.

Vulnerable software versions

openldap (Debian package): 2.4.10-2+lenny1 - 2.4.55+dfsg-1

CPE2.3

External links

https://www.debian.org/security/2020/dsa-4792

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Reachable Assertion

EUVDB-ID: #VU48515