Use After Free in Mozilla Firefox
CVE-2016-5258
Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (87.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Mozilla Firefox — versions 45.1.0, 45.1.1, 45.2.0
- Oracle Linux — versions 5.0, 6, 7
Weakness classification (CWE)
References
- www.debian.org/security/2016/dsa-3640 (vendor-advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Issue Tracking)
- www.securitytracker.com/id/1036508 (vdb-entry)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (Third Party Advisory)
- www.mozilla.org/security/announce/2016/mfsa2016-72.html (Vendor Advisory)
- www.ubuntu.com/usn/USN-3044-1 (vendor-advisory)
- www.securityfocus.com/bid/92258 (vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-1551.html (vendor-advisory)
- security.gentoo.org/glsa/201701-15 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-5258?
- CVE-2016-5258 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 8.8/10. Published 2016-08-05.
- How severe is CVE-2016-5258?
- High severity. CVSS v3 base score is 8.8 out of 10.