SB2019080744 - Privilege escalation in Avatar plugin for Jenkins

Description

This security bulletin contains information about 1 vulnerability.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-10377)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the affected software does not implement a permission check for the HTTP URL used to replace user avatars. A remote authenticated attacker with Overall/Read permission can change any other user’s avatar, in addition to their own.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://www.openwall.com/lists/oss-security/2019/08/07/1
• https://jenkins.io/security/advisory/2019-08-07/#SECURITY-1099