CVE-2019-17026 Explained : Impact and Mitigation
Discover the impact of CVE-2019-17026, a vulnerability in IonMonkey JIT compiler affecting Firefox ESR, Thunderbird, and Firefox versions. Learn about affected systems, exploitation, and mitigation steps.
A potential vulnerability in the IonMonkey JIT compiler affecting Firefox ESR, Thunderbird, and Firefox versions prior to specified versions.
Understanding CVE-2019-17026
A flaw in the IonMonkey JIT compiler could lead to incorrect alias information for setting array elements, exploited in targeted attacks.
What is CVE-2019-17026?
The vulnerability involves a type confusion due to incorrect alias information in the IonMonkey JIT compiler, impacting specific versions of Firefox ESR, Thunderbird, and Firefox.
The Impact of CVE-2019-17026
- Exploited in targeted attacks
- Users of affected versions may be at risk
Technical Details of CVE-2019-17026
The technical aspects of the vulnerability and affected systems.
Vulnerability Description
- IonMonkey JIT compiler flaw
- Incorrect alias information for setting array elements
Affected Systems and Versions
- Firefox ESR < 68.4.1
- Thunderbird < 68.4.1
- Firefox < 72.0.1
Exploitation Mechanism
- Type confusion with StoreElementHole and FallibleStoreElement
Mitigation and Prevention
Steps to mitigate the vulnerability and enhance security.
Immediate Steps to Take
- Update affected software to versions above the specified ones
- Be cautious of targeted attacks
Long-Term Security Practices
- Regularly update software and security patches
- Implement security best practices
Patching and Updates
- Apply patches provided by Mozilla