Vulnerability identifier: #VU26996
Vulnerability risk: High
CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID:
CWE-ID:
CWE-502
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Yaml Axis
Web applications /
Modules and components for CMS
Vendor: Jenkins
Description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to the affected software does not configure its YAML parser to prevent the instantiation of arbitrary types. A remote user able to configure a multi-configuration (Matrix) job, or control the contents of a previously configured job’s SCM repository can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Yaml Axis: 0.1.0 - 0.2.0
External links
https://www.openwall.com/lists/oss-security/2020/04/16/4
https://jenkins.io/security/advisory/2020-04-16/#SECURITY-1825
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.