MEDIUM
GHSA-xv59-967r-8726
rust-openssl vulnerable to heap buffer overflow when encrypting with AES key-wrap-with-padding
Details
`CipherCtxRef::cipher_update`, `CipherCtxRef::cipher_update_vec`, and `symm::Crypter::update` 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.
Are you affected?
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Affected packages
crates.io/openssl
Introduced in:
0.10.0Fixed in: 0.10.79Upgrade openssl to 0.10.79 or newer (ecosystem crates.io).