Mozilla Firefox Use-After-Free Vulnerability
An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox <…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 5 / 5
- KEV catalog (CISA)15 Oct 2024
- Exploited in EUVD (ENISA)15 Oct 2024
- Used by ransomwareyes
- EPSS above 10 %23.2%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.
Affected products
- unspecified <131.0.1
- unspecified <128.3.1
- unspecified <131.0.2
- unspecified <115.16.0
- unspecified <115.16.1
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 23.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2010-3765Mozilla Multiple Products Remote Code Execution Vulnerability8.8 · Background exploitation
- CVE-2016-9079Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability8.0 · Background exploitation
- CVE-2015-4495Mozilla Firefox Security Feature Bypass Vulnerability8.0 · Background exploitation
- CVE-2019-11708Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability8.1 · Background exploitation
- CVE-2019-11707Mozilla Firefox and Thunderbird Type Confusion Vulnerability7.1 · Background exploitation
- CVE-2013-1690Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability8.0 · Background exploitation