GitHub Advisoryadvisory · crates.io
GHSA-phqj-4mhp-q6mq rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers
MEDIUM
Official page ↗
- Aliases
- CVE-2026-45784
- Ecosystem
- crates.io
- Packages
- openssl
- Severity
- Moderate
- CVSS vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Weaknesses
- CWE-131, CWE-787
- Reviewed
- 2026-05-19
Affected packages
• crates.io openssl: >= 0.10.50, < 0.10.80 → fixed in 0.10.80
Description
`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
Related
Alias · CVE (1)
- CVE-2026-45784 rust-openssl provides OpenSSL bindings for the Rust programming language. vulnerability