CVE-2023-42811
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.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- aes-gcm project/aes-gcm · fedoraproject/fedora
- Source
- security-advisories@github.com
References
- https://docs.rs/aes-gcm/latest/src/aes_gcm/lib.rs.html#309Product
- https://github.com/RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vqExploit, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROBB6TBDAGEQ2WIINR34F3DPSN3FND6K/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RYQCICN6BVC6I75O3F6W4VK4J3MOYDJU/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U67ZSMNX5V3WTBYPUYF45PSFG4SF5SGF/Mailing List
- https://docs.rs/aes-gcm/latest/src/aes_gcm/lib.rs.html#309Product
- https://github.com/RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vqExploit, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROBB6TBDAGEQ2WIINR34F3DPSN3FND6K/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RYQCICN6BVC6I75O3F6W4VK4J3MOYDJU/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U67ZSMNX5V3WTBYPUYF45PSFG4SF5SGF/Mailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.