Type Confusion Vulnerability in Mozilla Firefox and Thunderbird
CVE-2019-11707
Key Information:
- Vendor
Mozilla
- Vendor
- CVE Published:
- 23 July 2019
Badges
What is CVE-2019-11707?
A type confusion vulnerability exists in Mozilla Firefox and Thunderbird, stemming from improper handling of JavaScript objects in the Array.pop function. This flaw can facilitate an exploitable crash, potentially compromising the stability and security of affected applications. Recent attacks in the wild have been reported, highlighting the urgency for users to upgrade to secure versions. The impacted versions include Firefox ESR below 60.7.1, Firefox below 67.0.3, and Thunderbird below 60.7.2, making it crucial for users and administrators to apply the necessary patches and updates.
CISA has reported CVE-2019-11707
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2019-11707 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace
The CISA's recommendation is: Apply updates per vendor instructions.
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Affected Version(s)
Firefox < 67.0.3
Firefox ESR < 60.7.1
Thunderbird < 60.7.2
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
81% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- 🦅
CISA Reported
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved