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TI-2023-04227 Aliases CVE-2023-4583GHSA-wxxp-w379-49qj

Browsing Context potentially not cleared when closing Private Window

Priority MEDIUM 40CWE-754Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 17 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00685 52nd percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 117Firefox ESR (Mozilla): 115.2+1 more productRed Hat: 15 advisoriesRed Hat: 17 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 117117Patch availableCNA
MozillaFirefox ESRbefore 115.2115.2Patch availableCNA
MozillaThunderbirdbefore 115.2115.2Patch availableCNA
  • Firefox VendorMozilla Affected before 117 Fixed in 117 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 115.2 Fixed in 115.2 Patch available CNA
  • Thunderbird VendorMozilla Affected before 115.2 Fixed in 115.2 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 117.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 115.2VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 115.2VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 117.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 115.2 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 115.2 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 117
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 115.2
  • Fix · CNA Thunderbird (Mozilla) Fixed in 115.2

Red Hat 15 advisories

  • RHSA-2023:5019 Released 2023-09-07 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.15.0-1.el7_9
  • RHSA-2023:4954 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.15.0-1.el8_8
  • RHSA-2023:4952 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-102.15.0-1.el8_8
Show 12 more Red Hat advisories
  • RHSA-2023:4959 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.15.0-1.el8_6
  • RHSA-2023:4956 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-102.15.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-102.15.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-102.15.0-1.el8_4
  • RHSA-2023:4957 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-102.15.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-102.15.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-102.15.0-1.el8_4
  • RHSA-2023:4958 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-102.15.0-1.el9_2, firefox-x11-102.15.0-1.el9_2
  • RHSA-2023:4955 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.15.0-1.el9_2
  • RHSA-2023:4945 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.15.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.15.0-1.el7_9
  • RHSA-2023:4949 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.15.0-1.el8_1
  • RHSA-2023:4948 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.15.0-1.el8_1
  • RHSA-2023:4946 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.15.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.15.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.15.0-1.el8_2
  • RHSA-2023:4951 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.15.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.15.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.15.0-1.el8_2
  • RHSA-2023:4947 Released 2023-09-04 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.15.0-1.el9_0
  • RHSA-2023:4950 Released 2023-09-04 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.15.0-1.el9_0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 117

    13 records Highest priority Priority MEDIUM 5 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2023-04220 Integer Overflow in RecordedSourceSurfaceCreationPriority MEDIUM 45
    • TI-2023-04226 Buffer Overflow in WebGL glGetProgramivPriority MEDIUM 42
    • TI-2023-04229 Memory safety bugs fixed in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2Priority MEDIUM 41
    Show all 13 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 115.2

    12 records Highest priority Priority MEDIUM 5 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2023-04220 Integer Overflow in RecordedSourceSurfaceCreationPriority MEDIUM 45
    • TI-2023-04226 Buffer Overflow in WebGL glGetProgramivPriority MEDIUM 42
    • TI-2023-04229 Memory safety bugs fixed in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2Priority MEDIUM 41
    Show all 12 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:4952, RHSA-2023:4954
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:4955, RHSA-2023:4958
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2023:4946, RHSA-2023:4951
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2023:4956, RHSA-2023:4957
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2023:4948, RHSA-2023:4949
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2023:4946, RHSA-2023:4951
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2023:4956, RHSA-2023:4957
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:4959
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:4947, RHSA-2023:4950
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2023:4946, RHSA-2023:4951
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2023:4956, RHSA-2023:4957
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:4945, RHSA-2023:5019
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:5019
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:5019
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:4945, RHSA-2023:5019
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:4945, RHSA-2023:5019
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:5019

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-4583
  2. 2026-10-03 Alias added: GHSA-wxxp-w379-49qj

References

Advisory 3

Other 1

  • 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