CVE-2023-6240: Kernel: marvin vulnerability side-channel leakage in the rsa decryption operation
A flaw found that is Marvin Attack vulnerability side-channel leakage in the RSA decryption operation.
References: https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ https://people.redhat.com/~hkario/marvin/
Other sources
A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.
— NVD
Linux Kernel could allow a remote attacker to obtain sensitive information, caused by a Marvin vulnerability side-channel leakage in the RSA decryption operation. By exploiting the side-channel leakage, an attacker could exploit this vulnerability to decrypt ciphertexts or forge signatures, limiting the services that use that private key.
— IBM
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-6240?
CVE-2023-6240 has been classified with a medium severity level due to its potential to leak sensitive information through side-channel attacks.
How do I fix CVE-2023-6240?
To mitigate CVE-2023-6240, it is advised to apply the latest security updates for the Linux kernel or Red Hat Enterprise Linux as suggested in the security advisories.
What systems are affected by CVE-2023-6240?
CVE-2023-6240 affects multiple versions of the Linux kernel and Red Hat Enterprise Linux 7.0, 8.0, and 9.0.
What type of vulnerability is CVE-2023-6240?
CVE-2023-6240 is a side-channel leakage vulnerability associated with the RSA decryption operation.
Can CVE-2023-6240 be exploited remotely?
While exploitation of CVE-2023-6240 may require local access, side-channel attacks could potentially lead to remote information leakage.