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CVE-2019-11707: Security vulnerabilities fixed in Thunderbird 60.7.2

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.

CVE
#vulnerability#web#google#java#firefox

Mozilla Foundation Security Advisory 2019-20

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

  • Bug 1544386

#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

  • Bug 1559858

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