CVE-2023-6240: linux kernel (CVSS 6.5)

Description

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Weakness Type (CWE)

CWE-203 CWE-203

Affected Products

Vendor	Product	Versions
linux	linux_kernel	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All

References

Other References

https://access.redhat.com/errata/RHSA-2024:1881 https://access.redhat.com/errata/RHSA-2024:1882 https://access.redhat.com/errata/RHSA-2024:2758 https://access.redhat.com/errata/RHSA-2024:3414 https://access.redhat.com/errata/RHSA-2024:3421 https://access.redhat.com/errata/RHSA-2024:3618 https://access.redhat.com/errata/RHSA-2024:3627 https://access.redhat.com/security/cve/CVE-2023-6240 https://bugzilla.redhat.com/show_bug.cgi?id=2250843 https://people.redhat.com/~hkario/marvin/

Frequently Asked Questions

What is CVE-2023-6240? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-6240? +

CVE-2023-6240 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-6240? +

CVE-2023-6240 affects products from linux, redhat, specifically: enterprise_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6240? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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