#VU48228 Improper Authentication in Active Directory - CVE-2020-2301

Vulnerability identifier: #VU48228

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-2301

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Active Directory
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the provided password is not used when looking up an applicable cache entry when run in Windows/ADSI mode. A remote attacker can log in as any user using any password while a successful authentication of that user is still in the cache.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Active Directory: 1 - 2.19

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External links
https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2123

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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.