CVE-2023-29539

moderate-risk
Published 2023-06-02

When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

Do I need to act?

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0.22% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (5)

Focus

Affected Vendors

Mozilla

References (8)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1784348
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-13/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-14/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-15/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1784348
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-13/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-14/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-15/
43
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 1/34 · Minimal
Exposure 12/34 · Low