CVE-2023-29542: mozilla firefox
Vulnerability summary
CVE-2023-29542 is a critical (CVSS 9.8) vulnerability in mozilla firefox. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 19-06-2023PublishedVulnerability first disclosed.
- 11-12-2024Last modifiedVulnerability information updated.
Description
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.94%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
0.00 pp
From 0.94% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu5 products
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- mozjs78All versions (No fix recorded)
- mozjs91All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 112 | < 112.0
- firefox_esr≥ unspecified, < 102.10 | < 102.10
- thunderbird≥ unspecified, < 102.10 | < 102.10
2 vendors · 8 products
References
9 links- bugzilla.mozilla.org/show_bug.cgi?id=1810793Permissions Required
- bugzilla.mozilla.org/show_bug.cgi?id=1815062Permissions Required
- www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory