An issue was discovered in LibSass through 3.5.4. A NULL pointer dereference was found in the function Sass::Functions::selector_append which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libsass | Sass-lang | * | 3.5.4 (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/xenial | * |
| Libsass | Ubuntu | groovy | * |
| Libsass | Ubuntu | hirsute | * |
| Libsass | Ubuntu | impish | * |
| Libsass | Ubuntu | kinetic | * |
| Libsass | Ubuntu | lunar | * |
| Libsass | Ubuntu | mantic | * |
| Libsass | Ubuntu | upstream | * |
| Libsass | Ubuntu | xenial | * |