Vulnerability GHSA-xv59-967r-8726

Medium Risk
MEDIUM RISK
CVSS Score: 6.0
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
6 months ago
May 07, 2026 at 10:33 PM UTC
rust-openssl vulnerable to heap buffer overflow when encrypting with AES key-wrap-with-padding
0.10.0 - 0.10.78
0.10.0 - 0.10.78

Summary

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.

Impacted packages

Timeline

Published
6 months ago
May 07, 2026 at 10:33 PM UTC
Fixed (0.10.79)
6 months ago
May 04, 2026 at 12:19 AM UTC
Last Modified
2 months ago
September 10, 2026 at 03:51 AM UTC