Vulnerability in Aes-Gcm Project
CVE-2023-42811
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.
EPSS: 0.003 (18.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:N.
Affected products
- Aes-gcm_project Aes-gcm
- Rustcrypto Aeads — versions >= 0.10.0, < 0.10.3
- Fedoraproject Fedora — versions 37, 38, 39
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (Mailing List)
- security-advisories@github.com (Mailing List)
- security-advisories@github.com (Mailing List)
Frequently asked questions
- What is CVE-2023-42811?
- CVE-2023-42811 is a medium-severity vulnerability in Aes-Gcm Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 4.7/10. Published 2023-09-22.
- How severe is CVE-2023-42811?
- Medium severity. CVSS v3 base score is 4.7 out of 10.