CVE-2017-5397

CRITICAL

Firefox < 51.0.3 - Untrusted Library Loading via World-Writable Cache Directory

Title source: llm

Description

The cache directory on the local file system is set to be world writable. Firefox defaults to extracting libraries from this cache. This allows for the possibility of an installed malicious application or tools with write access to the file system to replace files used by Firefox with their own versions. This vulnerability affects Firefox < 51.0.3.

References (3)

Core 3

Core References

Issue Tracking, Patch, Vendor Advisory x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1337304

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/96144

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2017-04/

Scores

CVSS v3 9.8

EPSS 0.0325

EPSS Percentile 86.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-829

Status published

Products (1)

mozilla/firefox < 51.0.3

Published Jun 11, 2018

Tracked Since Feb 18, 2026