There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.
Weakness
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libsass | Libsass | 3.4.5 (including) | 3.4.5 (including) |
| Libsass | Ubuntu | artful | * |
| Libsass | Ubuntu | bionic | * |
| Libsass | Ubuntu | cosmic | * |
| Libsass | Ubuntu | disco | * |
| Libsass | Ubuntu | eoan | * |
| Libsass | Ubuntu | esm-apps/bionic | * |
| Libsass | Ubuntu | esm-apps/focal | * |
| Libsass | Ubuntu | esm-apps/jammy | * |
| Libsass | Ubuntu | esm-apps/noble | * |
| Libsass | Ubuntu | esm-apps/xenial | * |
| Libsass | Ubuntu | focal | * |
| Libsass | Ubuntu | groovy | * |
| Libsass | Ubuntu | hirsute | * |
| Libsass | Ubuntu | impish | * |
| Libsass | Ubuntu | jammy | * |
| Libsass | Ubuntu | kinetic | * |
| Libsass | Ubuntu | lunar | * |
| Libsass | Ubuntu | mantic | * |
| Libsass | Ubuntu | noble | * |
| Libsass | Ubuntu | oracular | * |
| Libsass | Ubuntu | xenial | * |
| Libsass | Ubuntu | zesty | * |