Buffer overflow in Mozilla Firefox
CVE-2019-11740
Mozilla developers and community members reported memory safety bugs present in Firefox 68, Firefox ESR 68, and Firefox 60.8. 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 Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified, unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified, unspecified
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.04
- openSUSE Leap — versions 15.0, 15.1
Weakness classification (CWE)
References
- bugzilla.mozilla.org/buglist.cgi (Issue Tracking, Not Applicable, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-25/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-27/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-26/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-29/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-30/ (Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11740?
- CVE-2019-11740 is a high-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-09-27.
- How severe is CVE-2019-11740?
- High severity. CVSS v3 base score is 8.8 out of 10.