Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occured when allocating too much private shader memory on mac OS. *This bug only affects Firefox on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
| Link | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1773874 | issue tracking permissions required |
| https://www.mozilla.org/security/advisories/mfsa2023-34/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-36/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-38/ | vendor advisory |