CVE-2017-1000091

moderate-risk

Published 2017-10-05

GitHub Branch Source Plugin connects to a user-specified GitHub API URL (e.g. GitHub Enterprise) as part of form validation and completion (e.g. to verify Scan Credentials are correct). This functionality improperly checked permissions, allowing any user with Overall/Read access to Jenkins to connect to any web server and send credentials with a known ID, thereby possibly capturing them. Additionally, this functionality did not require POST requests be used, thereby allowing the above to be performed without direct access to Jenkins via Cross-Site Request Forgery.

Do I need to act?

0.07% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.3/10 Medium

NETWORK / LOW complexity

Affected Products (20)

Github Branch Source

Affected Vendors

Jenkins

References (2)

Vendor Advisory https://jenkins.io/security/advisory/2017-07-10/

/ 100

moderate-risk

Severity 23/34 · High

Exploitability 0/34 · Minimal

Exposure 24/34 · High