CVE-2024-2236: Libgcrypt: vulnerable to marvin attack
A timing based side-channel exists in the libgcrypt RSA implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve successful decryption an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OAEP, and RSASVE.
Other sources
A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.
— NVD
Libgcrypt is vulnerable to the Marvin attack.
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-2236?
CVE-2024-2236 is considered a high severity vulnerability due to its potential for plaintext recovery via a timing-based side-channel attack.
How do I fix CVE-2024-2236?
To fix CVE-2024-2236, update the GNU libgcrypt library to the latest patched version provided by the developers.
Who is affected by CVE-2024-2236?
CVE-2024-2236 affects users of the GNU libgcrypt library, specifically in its RSA implementation.
What type of attack does CVE-2024-2236 facilitate?
CVE-2024-2236 facilitates a Bleichenbacher-style attack that can lead to plaintext recovery.
Can CVE-2024-2236 be exploited remotely?
Yes, CVE-2024-2236 can potentially be exploited remotely if an attacker can send multiple trial messages across a network.