Vulnerability in Mozilla Firefox
CVE-2017-5397
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.038 (89.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.038 · change: +0.006
Affected products
- Mozilla Firefox — versions unspecified
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
- www.securityfocus.com/bid/96144 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-04/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-5397?
- CVE-2017-5397 is a critical-severity vulnerability in Mozilla Firefox, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.8/10. Published 2018-06-11.
- How severe is CVE-2017-5397?
- Critical severity. CVSS v3 base score is 9.8 out of 10.