Mozilla Foundation Security Advisory 2019-20

Security vulnerabilities fixed in Thunderbird 60.7.2

Announced
June 20, 2019
Impact
high
Products
Thunderbird
Fixed in
  • Thunderbird 60.7.2

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-2019-11707: Type confusion in Array.pop

Reporter
Samuel Groß of Google Project Zero, Coinbase Security
Impact
critical
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.

References

#CVE-2019-11708: sandbox escape using Prompt:Open

Reporter
Coinbase Security
Impact
high
Description

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer.

References