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MEDIUM

GHSA-phqj-4mhp-q6mq

rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers

Details

`CipherCtxRef::cipher_update_inplace` incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced.

This only impacts users using AES key-wrap-with-padding ciphers.

This method was missed in the fix for GHSA-xv59-967r-8726

Are you affected?

Enter the version of the package you're using.

Affected packages

crates.io/openssl
Introduced in: 0.10.50Fixed in: 0.10.80

Upgrade openssl to 0.10.80 or newer (ecosystem crates.io).

References