ReviewHigh

CVE-2023-29541

Mozilla Firefox, Focus for Android, Firefox ESR

Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be interpreted to run attacker-controlled commands. <br>*This bug only affects Firefox for Linux on certain Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affected Linux Distributions.*. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

CVSS: 8.8
EPSS: 0.74%
CISA KEV: Not listed
Published: 2023.06.03

PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.74%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Mozilla Firefox, Focus for Android, Firefox ESR
Affected versions: >= unspecified < 112, >= unspecified < 102.10, < 112.0
Fixed versions: 112.0, 102.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Mozilla Firefox, Focus for Android, Firefox ESR and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-116