Multiple vulnerabilities in Jenkins and Jenkins LTS

Published: 2022-02-11

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-43859 CVE-2022-0538
CWE-ID	CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Jenkins Server applications / Application servers Jenkins LTS Server applications / Application servers
Vendor	Jenkins

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU60527

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43859

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Jenkins: 2.0 - 2.333

Jenkins LTS: 2.7.1 - 2.319.2

External links

http://jenkins.io/security/advisory/2022-02-09/

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) Resource exhaustion

EUVDB-ID: #VU60528