#VU17916 Security restrictions bypass in Email Extension
Published: March 7, 2019 / Updated: March 7, 2019
Vulnerability identifier: #VU17916
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Email Extension
Email Extension
Software vendor:
Jenkins
Jenkins
Description
The vulnerability allows a remote attacker to execute arbitrary code on the vulnerable server.
The vulnerability exists due to an error when parsing, compiling or instantiating a Groovy script within the supported functionality for sandboxed Groovy expressions. A remote attacker with the ability to control the plugin’s job-specific configuration can supply a specially crafted Groovy script, bypass the sandbox protection and execute arbitrary code on the Jenkins master.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected server.
Remediation
Install update from vendor's website.