Buffer overflow in Mozilla Firefox
CVE-2018-5094
A heap buffer overflow vulnerability may occur in WebAssembly when "shrinkElements" is called followed by garbage collection on memory that is now uninitialized. This results in a potentially exploitable crash. This vulnerability affects Firefox < 58.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.153 (96.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.153 · newest: 0.153 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1040270 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- usn.ubuntu.com/3544-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/102786 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2018-02/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-5094?
- CVE-2018-5094 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2018-06-11.
- How severe is CVE-2018-5094?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-5094 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.