Origin validation error in Mozilla Firefox
Priority LOW 31CWE-346Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 16 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-346.
Summary
By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
Why it matters now
EPSS 0.01263 69th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 79Firefox ESR (Mozilla): 68.11, 78.1+1 more productRed Hat: 10 advisoriesRed Hat: 16 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox | before 79 | 79 | Patch available | CNA |
| Mozilla | Firefox ESR | before 68.11; before 78.1 | 68.11, 78.1 | Patch available | CNA |
| Mozilla | Thunderbird | before 68.11; before 78.1 | 68.11, 78.1 | Patch available | CNA |
- Firefox VendorMozilla Affected before 79 Fixed in 79 Patch available CNA
- Firefox ESR VendorMozilla Affected before 68.11; before 78.1 Fixed in 68.11, 78.1 Patch available CNA
- Thunderbird VendorMozilla Affected before 68.11; before 78.1 Fixed in 68.11, 78.1 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 79.0; 78.0 to before 78.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | before 68.11 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 68.11; 78.0 to before 78.1 | Vulnerable | Mozilla |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | 20.04 | Vulnerable | Canonical |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 79.0; 78.0 to before 78.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 68.11 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 68.11; 78.0 to before 78.1 Vulnerable ·Mozilla
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 79
- Fix · CNA Firefox ESR (Mozilla) Fixed in 68.11, 78.1
- Fix · CNA Thunderbird (Mozilla) Fixed in 68.11, 78.1
Red Hat 10 advisories
- RHSA-2020:3345 Released 2020-08-06 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-68.11.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-68.11.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-68.11.0-1.el6_10
- RHSA-2020:3344 Released 2020-08-06 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-68.11.0-1.el7_8
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-68.11.0-1.el7_8
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-68.11.0-1.el7_8
- RHSA-2020:3341 Released 2020-08-06 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-68.11.0-1.el8_2
Show 7 more Red Hat advisories
- RHSA-2020:3342 Released 2020-08-06 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.1) thunderbird-68.11.0-1.el8_1
- RHSA-2020:3343 Released 2020-08-06 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.0) thunderbird-68.11.0-1.el8_0
- RHSA-2020:3253 Released 2020-07-30 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-68.11.0-1.el7_8
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-68.11.0-1.el7_8
- Red Hat Enterprise Linux Server (v. 7) firefox-68.11.0-1.el7_8
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-68.11.0-1.el7_8
- Red Hat Enterprise Linux Workstation (v. 7) firefox-68.11.0-1.el7_8
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-68.11.0-1.el7_8
- RHSA-2020:3254 Released 2020-07-30 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.1) firefox-68.11.0-1.el8_1
- RHSA-2020:3241 Released 2020-07-30 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-68.11.0-1.el8_2
- RHSA-2020:3233 Released 2020-07-29 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux Server (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) firefox-68.11.0-1.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-68.11.0-1.el6_10
- RHSA-2020:3229 Released 2020-07-29 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.0) firefox-68.11.0-1.el8_0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 79
8 records Highest priority Priority MEDIUM 2 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2020-12334 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 43
- TI-2020-12331 Type confusion in Mozilla Firefox ESRPriority MEDIUM 41
- TI-2020-12332 Uncontrolled search path in Mozilla Firefox ESRPriority LOW 34
- Release ·
Mozilla Firefox ESR, Thunderbird 68.11, 78.1
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2020-12334 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 43
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:3241, RHSA-2020:3341 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.0) | Fixed | RHSA-2020:3229, RHSA-2020:3343 |
| Red Hat Enterprise Linux AppStream EUS (v. 8.1) | Fixed | RHSA-2020:3254, RHSA-2020:3342 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:3253, RHSA-2020:3344 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:3253 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2020:3233, RHSA-2020:3345 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2020:3233 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2020:3233 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2020:3233 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3253 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2020:3233, RHSA-2020:3345 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3253, RHSA-2020:3344 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2020:3233, RHSA-2020:3345 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3253, RHSA-2020:3344 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2020:3233 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3253 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-15652
- 2026-10-03 Alias added: GHSA-2wfj-m7vx-f7mf
References
Advisory 10
- https://www.mozilla.org/security/advisories/mfsa2020-30/
- https://www.mozilla.org/security/advisories/mfsa2020-35/
- https://www.mozilla.org/security/advisories/mfsa2020-32/
- https://www.mozilla.org/security/advisories/mfsa2020-33/
- https://www.mozilla.org/security/advisories/mfsa2020-31/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1634872
- openSUSE-SU-2020:1179
- openSUSE-SU-2020:1189
- openSUSE-SU-2020:1205
- USN-4443-1
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-2020-15652 · CVE Program
- CVE-2020-15652 · NVD
- FIRST EPSS
- GHSA-2wfj-m7vx-f7mf · GitHub Advisory Database · CC BY 4.0
- CVE-2020-15652 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences