Buffer overflow in Mozilla Firefox
CVE-2018-5187
Memory safety bugs present in Firefox 60 and Firefox ESR 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.
Vulnerability class: Buffer Overflow
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: 0.030 (86.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- security.gentoo.org/glsa/201810-01 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2018-15/ (Vendor Advisory)
- lists.debian.org/debian-lts-announce/2018/11/msg00011.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201811-13 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4295 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2018-16/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2018-19/ (Vendor Advisory)
- www.securityfocus.com/bid/104556 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3705-1/ (vendor-advisory, Third Party Advisory)
- bugzilla.mozilla.org/buglist.cgi (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-5187?
- CVE-2018-5187 is a critical-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-10-18.
- How severe is CVE-2018-5187?
- Critical severity. CVSS v3 base score is 9.8 out of 10.