SB2023100365 - Improper verification of cryptographic signature in AEADs/aes-gcm for Rust
Published: October 3, 2023
Security Bulletin ID
SB2023100365
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2023-42811)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to an error in AES GCM implementation of decrypt_in_place_detached. The decrypted ciphertext (i.e. the correct plaintext) is exposed even if tag verification fails. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.
References
- https://docs.rs/aes-gcm/latest/src/aes_gcm/lib.rs.html#309
- https://github.com/RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vq
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RYQCICN6BVC6I75O3F6W4VK4J3MOYDJU/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U67ZSMNX5V3WTBYPUYF45PSFG4SF5SGF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROBB6TBDAGEQ2WIINR34F3DPSN3FND6K/