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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
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
- jira.atlassian.com/browse/BSERV-10439 (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.