CVE-2023-42811mediumCWE-347

CVE-2023-42811: medium-severity vulnerability in RustCrypto AEADs

AEADs/aes-gcm: Plaintext exposed in decrypt_in_place_detached even on tag verification failure

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.7epss 0.2%
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/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:N
Affected products
RustCrypto · AEADs
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