| Package | Affected versions | Patched versions |
|---|---|---|
| unrar | ≤ 5.5.4 | |
| threat detection engine | ≤ 3.36.2 |
A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].
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