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
EPSS: 0.028 (85.0th percentile) — read the EPSS interpretation.
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.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
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.