Buffer overflow in Mozilla Firefox
CVE-2019-11709
Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firefox ESR 60.7. 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 ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0
- openSUSE Leap — versions 15.0, 15.1
- SUSE Linux Enterprise — versions 12.0
- SUSE Package Hub
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2019-21/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-22/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-23/ (Vendor Advisory)
- bugzilla.mozilla.org/buglist.cgi (Issue Tracking, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/08/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/08/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201908-12 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201908-20 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11709?
- CVE-2019-11709 is a critical-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-07-23.
- How severe is CVE-2019-11709?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-11709 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.