CVE-2017-16857

moderate-risk

Published 2017-12-05

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.

Do I need to act?

0.27% 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 8.5/10 High

NETWORK / HIGH complexity

Affected Products (11)

Bitbucket Auto Unapprove Plugin

Affected Vendors

Atlassian

References (2)

Issue Tracking https://jira.atlassian.com/browse/BSERV-10439

/ 100

moderate-risk

Severity 25/34 · High

Exploitability 1/34 · Minimal

Exposure 16/34 · Moderate