CVE-2019-11707

critical-risk
Published 2019-07-23

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.

Do I need to act?

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84.4% chance of exploitation in next 30 days
EPSS score — higher than 16% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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2 public exploits available
47038, 50691
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Mozilla

References (9)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1544386
Third Party Advisory https://security.gentoo.org/glsa/201908-12
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2019-18/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2019-20/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1544386
Third Party Advisory https://security.gentoo.org/glsa/201908-12
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2019-18/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2019-20/
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-...
73
/ 100
critical-risk
Severity 30/34 · Critical
Exploitability 34/34 · Critical
Exposure 9/34 · Low