On May 4, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in Clam AntiVirus (ClamAV) versions 0.103.4, 0.103.5, 0.104.1, and 0.104.2 could allow an authenticated, local attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog.
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Clamav | Clamav | 0.103.4 (including) | 0.103.4 (including) |
| Clamav | Clamav | 0.103.5 (including) | 0.103.5 (including) |
| Clamav | Clamav | 0.104.1 (including) | 0.104.1 (including) |
| Clamav | Clamav | 0.104.2 (including) | 0.104.2 (including) |
| Clamav | Ubuntu | bionic | * |
| Clamav | Ubuntu | devel | * |
| Clamav | Ubuntu | esm-infra/xenial | * |
| Clamav | Ubuntu | focal | * |
| Clamav | Ubuntu | impish | * |
| Clamav | Ubuntu | jammy | * |
| Clamav | Ubuntu | kinetic | * |
| Clamav | Ubuntu | trusty/esm | * |
| Clamav | Ubuntu | upstream | * |
An attacker can supply a pointer for memory locations that the product is not expecting. If the pointer is dereferenced for a write operation, the attack might allow modification of critical state variables, cause a crash, or execute code. If the dereferencing operation is for a read, then the attack might allow reading of sensitive data, cause a crash, or set a variable to an unexpected value (since the value will be read from an unexpected memory location). There are several variants of this weakness, including but not necessarily limited to: