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TI-2016-02371 Aliases CVE-2016-2830GHSA-wfq5-5w67-p795

Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network…

Priority LOW 23CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

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.

Why it matters now

EPSS 0.01459 73rd percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*up to 47.0.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:*45.1.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*45.1.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:*45.2.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:*45.3.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions up to 47.0.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.1.0:*:*:*:*:*:*:* Versions 45.1.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:* Versions 45.1.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:* Versions 45.2.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:* Versions 45.3.0 Vulnerable ·Mozilla

Remediation

Red Hat 1 advisory

  • RHSA-2016:1551 Released 2016-08-03 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux (v. 5 server) firefox-45.3.0-1.el5_11, firefox-45.3.0-1.el5_11.i386
    • Red Hat Enterprise Linux Client (v. 7) firefox-45.3.0-1.el7_2
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-45.3.0-1.el7_2
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-45.3.0-1.el5_11, firefox-45.3.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux Server (v. 7) firefox-45.3.0-1.el7_2
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-45.3.0-1.el6_8, firefox-45.3.0-1.el6_8.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-45.3.0-1.el7_2, firefox-45.3.0-1.el7_2.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-45.3.0-1.el7_2
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-45.3.0-1.el6_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-45.3.0-1.el7_2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:1551
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1551

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-2830
  2. 2026-10-03 Alias added: GHSA-wfq5-5w67-p795

References

Advisory 7

Other 2

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences