Read the docs
TI-2014-07097 Aliases CVE-2014-8639GHSA-cfgr-xpqw-rcxf

Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and…

Priority LOW 34Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 do not properly interpret Set-Cookie headers within responses that have a 407 (aka Proxy Authentication Required) status code, which allows remote HTTP proxy servers to conduct session fixation attacks by providing a cookie name that corresponds to the session cookie of the origin server.

Why it matters now

EPSS 0.01902 79th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

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 · 8

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*up to 2.31VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*up to 34.0.5VulnerableMozilla
cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:*31.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:*31.1.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:*31.1.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:31.3.0:*:*:*:*:*:*:*31.3.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:31.2:*:*:*:*:*:*:*31.2VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*up to 31.3.0VulnerableMozilla
  • cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* Versions up to 2.31 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions up to 34.0.5 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:* Versions 31.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:* Versions 31.1.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:* Versions 31.1.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:31.3.0:*:*:*:*:*:*:* Versions 31.3.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:31.2:*:*:*:*:*:*:* Versions 31.2 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions up to 31.3.0 Vulnerable ·Mozilla

Remediation

Red Hat 2 advisories

  • RHSA-2015:0046 Released 2015-01-13 · Red Hat rating Critical
    firefox security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) firefox-31.4.0-1.el5_11, firefox-31.4.0-1.el5_11.i386, firefox-31.4.0-1.el5_11.ia64 +1
    • Red Hat Enterprise Linux Client (v. 7) firefox-31.4.0-1.el7_0, xulrunner-31.4.0-1.el7_0
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-31.4.0-1.el7_0, xulrunner-devel-31.4.0-1.el7_0
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) xulrunner-31.4.0-1.el7_0, xulrunner-devel-31.4.0-1.el7_0
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-31.4.0-1.el5_11, firefox-31.4.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Server (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Server (v. 7) firefox-31.4.0-1.el7_0, xulrunner-31.4.0-1.el7_0, xulrunner-31.4.0-1.el7_0.ppc
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-31.4.0-1.el6_6, firefox-31.4.0-1.el6_6.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-31.4.0-1.el7_0, firefox-31.4.0-1.el7_0.ppc, xulrunner-31.4.0-1.el7_0 +2
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-31.4.0-1.el7_0, xulrunner-31.4.0-1.el7_0
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-31.4.0-1.el7_0, xulrunner-devel-31.4.0-1.el7_0
  • RHSA-2015:0047 Released 2015-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird-31.4.0-1.el5_11, thunderbird-31.4.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird-31.4.0-1.el5_11, thunderbird-31.4.0-1.el5_11.i386
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-31.4.0-1.el6_6
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-31.4.0-1.el6_6

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-2015:0046
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2015:0046, RHSA-2015:0047
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2015:0046, RHSA-2015:0047
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2015:0046
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server)Fixed RHSA-2015:0047
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2015:0046, RHSA-2015:0047
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2015:0046, RHSA-2015:0047
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2015:0046
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2015:0046

Timeline

  1. 2026-10-02 Threatist record created from CVE-2014-8639
  2. 2026-10-03 Alias added: GHSA-cfgr-xpqw-rcxf

References

Advisory 14

Other 4

  • 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