NULL pointer dereference in Mozilla Firefox
CVE-2023-29539
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Firefox For Android — versions unspecified
- Mozilla Firefox Mobile
- Mozilla Focus
- Mozilla Focus For Android — versions unspecified
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2023-15/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2023-14/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2023-13/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking)
Frequently asked questions
- What is CVE-2023-29539?
- CVE-2023-29539 is a high-severity vulnerability in Mozilla Firefox, classified under NULL Pointer Dereference. CVSS score: 8.8/10. Published 2023-06-02.
- How severe is CVE-2023-29539?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-29539 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.