CVE-2023-42811: Aes-Gcm Project Aes-Gcm

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Aes-Gcm Project Aes-Gcm: from 0.10.0, before 0.10.3 (fixed in 0.10.3)
• Fedoraproject Fedora: version 37 only; version 38 only; version 39 only

Published 2023-09-22. Last modified 2026-06-17.