CVE-2017-18876
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A System Admin can test for the existence of an arbitrary file.
02 / AFFECTED SOFTWARE
Affected packages
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A System Admin can test for the existence of an arbitrary file.
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A System Admin can test for the existence of an arbitrary file.
Mattermost Server is vulnerable to Path Traversal when files are stored locally in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost-server before v4.1.2-0.20171004201910-6be8113eb60c, from v4.2.0-rc1.0.20171004154238-fadd9514f6e7 before v4.2.1-0.20171004194140-6d3cb2ce07fc.
05 / REFERENCES
Further evidence
- https://mattermost.com/security-updates/
- https://github.com/mattermost/mattermost
- https://github.com/mattermost/mattermost/commit/6be8113eb60cf5ddd2dc1c3f4db05cae0c183086
- https://github.com/mattermost/mattermost/commit/6d3cb2ce07fc799832081e93843b405b390057fa
- https://github.com/mattermost/mattermost/commit/fadd9514f6e71590aba781a7035e1de4150137b0
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2017-18876
- https://github.com/advisories/GHSA-hjqh-j6rj-gh8q