Observable discrepancy in Mozilla Firefox ESR
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 15 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-203.
Summary
Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox ESR | before 102.5 | 102.5 | Patch available | CNA |
| Mozilla | Thunderbird | before 102.5 | 102.5 | Patch available | CNA |
| Mozilla | Firefox | before 107 | 107 | Patch available | CNA |
Remediation
- Fix · CNA Firefox ESR (Mozilla) Fixed in 102.5
- Fix · CNA Thunderbird (Mozilla) Fixed in 102.5
- Fix · CNA Firefox (Mozilla) Fixed in 107
Red Hat 16 advisories
- RHSA-2022:8979 Released 2022-12-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.5.0-1.el9_0
- RHSA-2022:8980 Released 2022-12-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.5.0-2.el9_0
- RHSA-2022:8580 Released 2022-11-22 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 9) firefox-102.5.0-1.el9_1
Show 13 more Red Hat advisories
- RHSA-2022:8561 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.5.0-2.el9_1
- RHSA-2022:8555 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-102.5.0-2.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.5.0-2.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.5.0-2.el7_9
- RHSA-2022:8552 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-102.5.0-1.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.5.0-1.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-102.5.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.5.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-102.5.0-1.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.5.0-1.el7_9
- RHSA-2022:8556 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.5.0-2.el8_1
- RHSA-2022:8554 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-102.5.0-1.el8_7
- RHSA-2022:8553 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.5.0-1.el8_1
- RHSA-2022:8549 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.5.0-1.el8_4
- RHSA-2022:8550 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.5.0-1.el8_2
- RHSA-2022:8548 Released 2022-11-21 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.5.0-1.el8_6
- RHSA-2022:8547 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.5.0-2.el8_7
- RHSA-2022:8545 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.5.0-2.el8_6
- RHSA-2022:8544 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.5.0-2.el8_4
- RHSA-2022:8543 Released 2022-11-21 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.5.0-2.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.5.0-2.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.5.0-2.el8_2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 107
19 records Highest priority Priority HIGH 1 HIGH, 12 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2022-22381 Unrestricted file upload in Mozilla FirefoxPriority HIGH 69
- TI-2022-22371 Use after free in Mozilla Firefox ESRPriority MEDIUM 62
- TI-2022-22370 Through a series of popup and <code>window.print()</code> calls, an attacker can cause a…Priority MEDIUM 62
- Release ·
Mozilla Firefox ESR, Thunderbird 102.5
13 records Highest priority Priority MEDIUM 8 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2022-22371 Use after free in Mozilla Firefox ESRPriority MEDIUM 62
- TI-2022-22370 Through a series of popup and <code>window.print()</code> calls, an attacker can cause a…Priority MEDIUM 62
- TI-2022-22384 Clickjacking in Mozilla Firefox ESRPriority MEDIUM 60
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:8547, RHSA-2022:8554 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2022:8561, RHSA-2022:8580 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2022:8543, RHSA-2022:8550 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.1) | Fixed | RHSA-2022:8553, RHSA-2022:8556 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.2) | Fixed | RHSA-2022:8543, RHSA-2022:8550 |
| Red Hat Enterprise Linux AppStream EUS (v.8.4) | Fixed | RHSA-2022:8544, RHSA-2022:8549 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2022:8545, RHSA-2022:8548 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2022:8979, RHSA-2022:8980 |
| Red Hat Enterprise Linux AppStream TUS (v. 8.2) | Fixed | RHSA-2022:8543, RHSA-2022:8550 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2022:8552, RHSA-2022:8555 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2022:8552 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2022:8552 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2022:8552, RHSA-2022:8555 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2022:8552, RHSA-2022:8555 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2022:8552 |
Timeline
- 2026-10-02 Threatist record created from CVE-2022-45403
- 2026-10-03 Alias added: GHSA-4p72-6jxp-vmqx
References
More Mozilla Firefox vulnerabilities
- 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
Sources
- CVE-2022-45403 · CVE Program
- CVE-2022-45403 · NVD
- FIRST EPSS
- GHSA-4p72-6jxp-vmqx · GitHub Advisory Database · CC BY 4.0
- CVE-2022-45403 · Red Hat security data · CC BY 4.0
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