Buffer overflow in Mozilla Firefox
CVE-2019-11729
Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before being copied into memory and used. 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 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: 0.028 (86.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
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/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:1951 (vendor-advisory)
- security.gentoo.org/glsa/201908-12 (vendor-advisory)
- security.gentoo.org/glsa/201908-20 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html (vendor-advisory)
Frequently asked questions
- What is CVE-2019-11729?
- CVE-2019-11729 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 2019-07-23.
- How severe is CVE-2019-11729?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-11729 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.