GitHub Advisoryadvisory · crates.io

GHSA-xv59-967r-8726 rust-openssl vulnerable to heap buffer overflow when encrypting with AES key-wrap-with-padding

MEDIUM Published 2026-05-07 Modified 2026-05-15 Official page ↗
Aliases
CVE-2026-44662
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-122
Reviewed
2026-05-07

Affected packages

• crates.io openssl: >= 0.10.0, < 0.10.79 → fixed in 0.10.79

Description

`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.

Related

Alias · CVE (1)

  • CVE-2026-44662 rust-openssl provides OpenSSL bindings for the Rust programming language. vulnerability

Weakness · CWE (1)

  • CWE-122 Heap-based Buffer Overflow weakness

References