References to Advisories, Solutions, and Tools

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Change History

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.

AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-916

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-vxf9-vwp6-2w43

https://www.vulncheck.com/advisories/openssl-encrypt-before-kdf-bypass-via-sequential-xor

[{"vendor":"jahlives","product":"openssl_encrypt","defaultStatus":"unaffected","packageURL":"pkg:pypi/openssl_encrypt","versions":[{"version":"0","lessThan":"1.4.6","versionType":"semver","status":"affected"},{"version":"1.4.6","versionType":"semver","status":"unaffected"}]}]