Multiple vulnerabilities in Mozilla Firefox and Mozilla Firefox ESR

Beschreibung

Multiple serious vulnerabilities were found in Mozilla Firefox and Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to execute arbitrary code, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A vulnerability in register allocation in JavaScript can be exploited remotely via arbitrary reading and writing to execute arbitrary code;
2. A vulnerability related to JavaScript JIT compiler can be exploited remotely to bypass security restrictions.

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Technical details

Vulnerability (2) results from memory leaks that occur when JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout.

Ursprüngliche Informationshinweise

• Mozilla Foundation Security Advisory 2018-24

CVE Liste

• CVE-2018-12386
  critical
• CVE-2018-12387
  critical

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