Information disclosure in Mozilla Firefox
CVE-2016-2830
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers to track users by observing network traffic from multiple IP addresses.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (72.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Mozilla Firefox — versions 45.1.0, 45.1.1, 45.2.0
Weakness classification (CWE)
References
- www.debian.org/security/2016/dsa-3640 (vendor-advisory)
- www.securitytracker.com/id/1036508 (vdb-entry)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- www.ubuntu.com/usn/USN-3044-1 (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2016-1551.html (vendor-advisory)
- security.gentoo.org/glsa/201701-15 (vendor-advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html (vendor-advisory)
- www.securityfocus.com/bid/92261 (vdb-entry)
- www.mozilla.org/security/announce/2016/mfsa2016-63.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-2830?
- CVE-2016-2830 is a medium-severity vulnerability in Mozilla Firefox, classified under Information Disclosure. CVSS score: 4.3/10. Published 2016-08-05.
- How severe is CVE-2016-2830?
- Medium severity. CVSS v3 base score is 4.3 out of 10.