Vulnerability identifier: #VU14613

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1999045

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jenkins
Server applications / Application servers

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to bypass authentication on the target system.

The vulnerability exists due to improper authentication in SecurityRealm.java, TokenBasedRememberMeServices2.java. A remote attacker with a valid cookie can remain logged in even if that feature is disabled.

Mitigation
The vulnerability has been fixed in the versions 2.138, 2.121.3.

Vulnerable software versions

Jenkins: 2.100 - 2.137

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External links
http://jenkins.io/security/advisory/2018-08-15/#SECURITY-637

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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.