Vulnerability in Mozilla Firefox
CVE-2016-2821
Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.
EPSS: 0.028 (84.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Mozilla Firefox — versions 45.1.0, 45.1.1
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.10
- Debian Debian_linux — versions 8.0
- Opensuse Leap — versions 42.1
- Opensuse — versions 13.1, 13.2
- N/a — versions n/a
References
- security@mozilla.org (vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_CONFIRM)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vdb-entry, x_refsource_BID)
- security@mozilla.org (vendor-advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2016-2821?
- CVE-2016-2821 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 7.5/10. Published 2016-06-13.
- How severe is CVE-2016-2821?
- High severity. CVSS v3 base score is 7.5 out of 10.