VulnerabilityAnalyzed
CVE-2019-11707
Mozilla Firefox and Thunderbird Type Confusion Vulnerability
KEVHIGH 8.8EPSS 37.7%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 13 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 37.70% probability · 98th percentile
- CISA KEV
- Listed 23 May 2022 · due 13 June 2022
- Weakness
- CWE-843
- Affected
- mozilla/firefox · mozilla/thunderbird
- Source
- security@mozilla.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-11707
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1544386Issue Tracking, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/201908-12Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-18/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-20/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1544386Issue Tracking, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/201908-12Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-18/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-20/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11707US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.