vulnwire
4.9med

CVE-2017-18876

Mattermost Server is vulnerable to Path Traversal when files are stored locally

Also known as GHSA-hjqh-j6rj-gh8q, GO-2025-4187

Published 6 y ago · modified 4 mo ago · JSON

CVSS
4.9
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.9%
percentile 59%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.87% probability of exploitation in the next 30 days, higher than 59% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.14.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD2.04.0AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected packages

EcosystemPackageAffectedFixed in
gogithub.com/mattermost/mattermost-server
<4.1.2-0.20171004201910-6be8113eb60c
>=4.2.0-rc1.0.20171004154238-fadd9514f6e7, <4.2.1-0.20171004194140-6d3cb2ce07fc
>=4.3.0-rc1, <4.3.0
>=4.3.0-rc1+incompatible, <4.3.0+incompatible
4.1.2-0.20171004201910-6be8113eb60c
4.2.1-0.20171004194140-6d3cb2ce07fc
4.3.0
4.3.0+incompatible

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

  • mattermost.com /security-updates/ · x_refsource_CONFIRM, x_transferred
  • nvd.nist.gov /vuln/detail/CVE-2017-18876 · advisory
  • github.com /mattermost/mattermost/commit/6be8113eb60cf5ddd2dc1c3f4db05cae0c183086 · web
  • github.com /mattermost/mattermost/commit/6d3cb2ce07fc799832081e93843b405b390057fa · web
  • github.com /mattermost/mattermost/commit/fadd9514f6e71590aba781a7035e1de4150137b0 · web
  • github.com /mattermost/mattermost · package
  • mattermost.com /security-updates · web
  • github.com /advisories/GHSA-hjqh-j6rj-gh8q · advisory

Sources

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