CVE-2023-42811

medium

Description

aes-gcm is a pure Rust implementation of the AES-GCM. Starting in version 0.10.0 and prior to version 0.10.3, in the AES GCM implementation of decrypt_in_place_detached, the decrypted ciphertext (i.e. the correct plaintext) is exposed even if tag verification fails. If a program using the `aes-gcm` crate's `decrypt_in_place*` APIs accesses the buffer after decryption failure, it will contain a decryption of an unauthenticated input. Depending on the specific nature of the program this may enable Chosen Ciphertext Attacks (CCAs) which can cause a catastrophic breakage of the cipher including full plaintext recovery. Version 0.10.3 contains a fix for this issue.

References

https://github.com/RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vq

https://lists.fedoraproject.org/archives/list/[email protected]/message/ROBB6TBDAGEQ2WIINR34F3DPSN3FND6K/

https://lists.fedoraproject.org/archives/list/[email protected]/message/RYQCICN6BVC6I75O3F6W4VK4J3MOYDJU/

https://lists.fedoraproject.org/archives/list/[email protected]/message/U67ZSMNX5V3WTBYPUYF45PSFG4SF5SGF/

Details

Source: Mitre, NVD

Published: 2023-09-22

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Severity: Medium