CVE-2023-4049: debian debian_linux Race Condition
CVSS: 5.9v3.1MediumModified
AliasesUBUNTU-CVE-2023-4049DEBIAN-CVE-2023-4049CGA-8q3p-jxw2-rx5gCGA-hcjp-2m8f-c5wh
Published 01-08-2023Last modified 13-02-2025
Vulnerability summary
CVE-2023-4049 is a medium (CVSS 5.9) Race Condition vulnerability in debian debian_linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.4% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.1 (NVD)EPSS score
0.63%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 30 · Related 10DLA-3521-1DLA-3523-1DSA-5464-1DSA-5469-1MGASA-2023-0266OPENSUSE-SU-2024:13091-1OPENSUSE-SU-2024:13124-1OPENSUSE-SU-2024:14572-1RHSA-2023:4460RHSA-2023:4461RHSA-2023:4462RHSA-2023:4463RHSA-2023:4464RHSA-2023:4465RHSA-2023:4468RHSA-2023:4469RHSA-2023:4492RHSA-2023:4493RHSA-2023:4494RHSA-2023:4495RHSA-2023:4496RHSA-2023:4497RHSA-2023:4499RHSA-2023:4500SUSE-SU-2023:3161-1SUSE-SU-2023:3162-1SUSE-SU-2023:3163-1SUSE-SU-2023:3228-1USN-6267-1USN-6333-1CGA-3RC4-M7XP-5V7J
Timeline
- 01-08-2023PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
Description
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 5.9Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.63%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
0.00 pp
From 0.63% on 19-09-2026
19-09-202619-10-2026
EPSS score0.63%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu8 products
- firefox< 116.0+build2-0ubuntu0.20.04.2
- mozjs102All versions (No fix recorded)
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Debian3 products
- firefox-esr< 102.14.0esr-1~deb12u1 | < 115.1.0esr-1
- thunderbird< 1:102.14.0-1~deb12u1 | < 1:115.1.0-1
- debian_linuxEOL11.0 | 12.0
Mozilla2 products
- firefox≥ unspecified, < 116 | < 116.0 | ≥ 102.0, < 102.14 | ≥ 115.0, < 115.1
- firefox_esr≥ unspecified, < 102.14 | ≥ unspecified, < 115.1
Chainguard1 product
- firefox-esr< 116.0-r0
4 vendors · 14 products
