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Mozilla Foundation Security Advisory 2019-12

Security vulnerabilities fixed in Thunderbird 60.6.1

Announced
March 25, 2019
Impact
critical
Products
Thunderbird
Fixed in
  • Thunderbird 60.6.1

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

#CVE-2019-9810: IonMonkey MArraySlice has incorrect alias information

Reporter
Richard Zhu and Amat Cama via Trend Micro's Zero Day Initiative
Impact
critical
Description

Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow.

References

#CVE-2019-9813: Ionmonkey type confusion with __proto__ mutations

Reporter
Niklas Baumstark via Trend Micro's Zero Day Initiative
Impact
critical
Description

Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write.

References