CVE-2019-11707
HIGH severity · CVSS 8.8 · CWE-843 · actively exploited (CISA KEV)
8.8CVSS HIGH ● exploited
🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2022-05-23. US federal agencies must patch by 2022-06-13.
Summary
A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)84%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://bugzilla.mozilla.org/show_bug.cgi?id=1544386Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-18/Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-20/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1544386Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-18/Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-20/Advisory
- https://security.gentoo.org/glsa/201908-12Advisory
- https://security.gentoo.org/glsa/201908-12Advisory