CVE-2017-18087 — The download commit resource in Atlassian Bitbucket Server from version 5

The download commit resource in Atlassian Bitbucket Server from version 5.1.0 before version 5.1.7, from version 5.2.0 before version 5.2.5, from version 5.3.0 before version 5.3.3 and from version 5.4.0 before version 5.4.1 allows remote attackers to write files to disk potentia

01What is this vulnerability?

The download commit resource in Atlassian Bitbucket Server from version 5.1.0 before version 5.1.7, from version 5.2.0 before version 5.2.5, from version 5.3.0 before version 5.3.3 and from version 5.4.0 before version 5.4.1 allows remote attackers to write files to disk potentially allowing them to gain code execution, exploit CVE-2017-1000117 if a vulnerable version of git is in use, and or…

02Affected products

Vendor	Product	Versions
Atlassian	Bitbucket Server	from 5.1.0 prior to 5.1.7, from 5.2.0 prior to 5.2.5, from 5.3.0 prior to 5.3.3, from 5.4.0 prior to 5.4.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2018-02-15T13:00:00.000Z
• Last modified: 2024-09-17T01:56:57.833Z

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/103038
• jira.atlassian.com — https://jira.atlassian.com/browse/BSERV-10593