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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.028 (85.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% 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 45.1.0, 45.1.1
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 8.0
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.1, 13.2
References
- www.securitytracker.com/id/1036057 (vdb-entry)
- www.mozilla.org/security/announce/2016/mfsa2016-51.html (Vendor Advisory)
- access.redhat.com/errata/RHSA-2016:1217 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html (vendor-advisory)
- www.ubuntu.com/usn/USN-2993-1 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html (vendor-advisory)
- www.securityfocus.com/bid/91075 (vdb-entry)
- www.debian.org/security/2016/dsa-3600 (vendor-advisory)
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.