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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (12.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.000
Affected products
- Aes-Gcm Project
- Rustcrypto Aeads — versions >= 0.10.0, < 0.10.3
- Fedoraproject Fedora — versions 37, 38, 39
Weakness classification (CWE)
References
- github.com/RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vq (Exploit, Vendor Advisory)
- docs.rs/aes-gcm/latest/src/aes_gcm/lib.rs.html (Product)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (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.