Vulnerability in Atlassian Auto-Unapprove Plugin (For Bitbucket Server)
CVE-2017-16857
It is possible to bypass the bitbucket auto-unapprove plugin via minimal brute-force because it is relying on asynchronous events on the back-end. This allows an attacker to merge any code into unsuspecting repositories. This affects all versions of the auto-unapprove plugin, however since the auto-unapprove plugin is not bundled with Bitbucket Server it does not affect any particular version of Bitbucket.
Vulnerability class: Race Condition
EPSS: 0.006 (44.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Atlassian Auto-unapprove Plugin (For Bitbucket Server) — versions All versions prior to version 3.0.1
- Atlassian Bitbucket_auto_unapprove_plugin — versions 1.0.0, 1.1.0, 1.2.0
Weakness classification (CWE)
References
- security@atlassian.com (x_refsource_CONFIRM, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-16857?
- CVE-2017-16857 is a high-severity vulnerability in Atlassian Auto-Unapprove Plugin (For Bitbucket Server), classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.5/10. Published 2017-12-05.
- How severe is CVE-2017-16857?
- High severity. CVSS v3 base score is 8.5 out of 10.