GitHub Advisoryadvisory · crates.io

GHSA-8c75-8mhr-p7r9 rust-openssl has incorrect bounds assertion in aes key wrap

HIGH Published 2026-04-22 Modified 2026-04-27 Official page ↗
Aliases
CVE-2026-41678
Ecosystem
crates.io
Packages
openssl
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Weaknesses
CWE-787
Reviewed
2026-04-22

Affected packages

• crates.io openssl: >= 0.10.24, < 0.10.78 → fixed in 0.10.78

Description

Summary ``aes::unwrap_key()`` has an incorrect bounds assertion on the out buffer size, which can lead to out-of-bounds write. Details ``aes::unwrap_key()`` contains an incorrect assertion: it checks that `out.len() + 8 = in_.len() - 8`, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of `out` by `in_.len() - 8 - out.len()` bytes, causing an out-of-bounds write from a safe public function. Impact Vulnerable applications using AES keywrap and allowing attacker controlled buffer sizes could have an attacker trigger an out-of-bounds write.

Related

Alias · CVE (1)

  • CVE-2026-41678 rust-openssl provides OpenSSL bindings for the Rust programming language. vulnerability

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References