Vulnerability GHSA-phqj-4mhp-q6mq

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.
5 months ago
May 19, 2026 at 07:50 PM UTC
rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers
0.10.50 - 0.10.79
0.10.50 - 0.10.79

Summary

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

Impacted packages

Timeline

Published
5 months ago
May 19, 2026 at 07:50 PM UTC
Fixed (0.10.80)
5 months ago
May 16, 2026 at 05:00 PM UTC
Last Modified
2 months ago
September 10, 2026 at 03:51 AM UTC