CVE-2024-7521 — Improper Handling of Exceptional Conditions in Mozilla Firefox

CWE-755 — Improper Handling of Exceptional ConditionsCWE-416 — Use After Free16 documents8 sources
Severity
8.8HIGHNVD
OSV9.6OSV6.5
EPSS
0.3%
top 50.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird
Timeline
PublishedAug 6
Latest updateSep 9

Description

Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages9 packages

▶CVEListV5mozilla/firefoxunspecified — 129
▶NVDmozilla/firefox< 129.0
▶CVEListV5mozilla/firefox_esrunspecified — 115.14+1
▶NVDmozilla/firefox_esr< 115.14.0+1
▶Ubuntumozilla/firefox< 129.0.1+build1-0ubuntu0.20.04.1

🔴Vulnerability Details

6
OSV
thunderbird vulnerabilities↗2024-09-09
▶
OSV
firefox regressions↗2024-08-21
▶
OSV
firefox vulnerabilities↗2024-08-19
▶
CVEList
CVE-2024-7521: Incomplete WebAssembly exception handing could have led to a use-after-free↗2024-08-06
▶
OSV
CVE-2024-7521: Incomplete WebAssembly exception handing could have led to a use-after-free↗2024-08-06
▶

📋Vendor Advisories

9
Ubuntu
Thunderbird vulnerabilities↗2024-09-09
▶
Ubuntu
Firefox vulnerabilities↗2024-08-19
▶
Red Hat
mozilla: Incomplete WebAssembly exception handing↗2024-08-06
▶
Debian
CVE-2024-7521: firefox - Incomplete WebAssembly exception handing could have led to a use-after-free. Thi...↗2024
▶
Mozilla
Mozilla Foundation Security Advisory 2024-38: CVE-2024-7521↗
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CVE-2024-7521 — Mozilla Firefox vulnerability | cvebase