#VU81449 Improper Verification of Cryptographic Signature in AEADs aes-gcm - CVE-2023-42811

Vulnerability identifier: #VU81449

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42811

CWE-ID: CWE-347

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
AEADs aes-gcm
Universal components / Libraries / Programming Languages & Components

Vendor: Rust Crypto

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AEADs aes-gcm: 0.10.0 - 0.10.2

---

External links
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/

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.