CVE-2022-38478
Members the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103, Firefox ESR 102.1, and Firefox ESR 91.12. Some of these bugs showed evidence of memory corruption and we presume
02 Description
Members the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 103, Firefox ESR 102.1, and Firefox ESR 91.12. Some of these bugs showed evidence of memory corruption and we presume
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.94% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 60.5% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2022-12-22 00:00Z3 YR AGO
- Last updated
- 2025-04-15 17:20Z1 YR AGO
- Reserved
- 2022-08-19
- Assigning CNA
- mozilla
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.1
- Document digest
- f7998eaf75f88ab080362c7e0f2f44564760d470c42c58812e82de58170e7f46
05 Affected products
06 References
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2022-35/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2022-33/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2022-37/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2022-36/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2022-34/
- bugzilla.mozilla.orghttps://bugzilla.mozilla.org/buglist.cgi?bug_id=1770630%2C1776658
07 Fixed in
AlmaLinux 8
- firefox Fixed in 91.13.0-1.el8_6.alma
- thunderbird Fixed in 91.13.0-1.el8_6.alma
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- firefox Fixed in 91.13.0-1.el9_0.alma
- thunderbird Fixed in 91.13.0-1.el9_0.alma
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- firefox Fixed in 91.13.0-1.el8_6.alma
- thunderbird Fixed in 91.13.0-1.el8_6.alma
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- firefox Fixed in 91.13.0-1.el9_0.alma
- thunderbird Fixed in 91.13.0-1.el9_0.alma
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- firefox-esr Fixed in 102.2.0esr-1
- thunderbird Fixed in 1:102.2.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- firefox-esr Fixed in 102.2.0esr-1
- thunderbird Fixed in 1:102.2.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- firefox-esr Fixed in 102.2.0esr-1
- thunderbird Fixed in 1:102.2.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- firefox Fixed in 104.0+build3-0ubuntu0.18.04.1
- mozjs38 No fix yet
- mozjs52 No fix yet
- thunderbird Fixed in 1:102.2.2+build1-0ubuntu0.18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- firefox Fixed in 104.0+build3-0ubuntu0.20.04.1
- mozjs52 No fix yet
- mozjs68 No fix yet
- thunderbird Fixed in 1:102.2.2+build1-0ubuntu0.20.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- mozjs78 No fix yet
- mozjs91 No fix yet
- thunderbird Fixed in 1:102.2.2+build1-0ubuntu0.22.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.