| Package | Affected versions | Patched versions |
|---|---|---|
| openssl-encrypt | < 1.4.6 | 1.4.6 |
| openssl encrypt | < 1.4.6 | 1.4.6 |
openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost.
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