#VU85841 Improper certificate validation in Apache::Session::LDAP - CVE-2020-36658

Vulnerability identifier: #VU85841

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-36658

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache::Session::LDAP
Universal components / Libraries / Programming Languages & Components

Vendor: LemonLDAP::NG

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to application does not check validity of the X.509 certificate when connecting to remote LDAP backends. A remote attacker can perform MitM attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache::Session::LDAP: 0.3 - 0.4

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External links
https://github.com/LemonLDAPNG/Apache-Session-LDAP/commit/490722b71eed1ed1ab33d58c78578f23e043561f
https://lists.debian.org/debian-lts-announce/2023/01/msg00024.html

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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.