6.5
MEDIUM
CVE-2023-6240
Marvin Linux Kernel Side-Channel Decryption Vulnerability
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.

INFO

Published Date :

Feb. 4, 2024, 2:15 p.m.

Last Modified :

Nov. 21, 2024, 8:43 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.2

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2023-6240 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-6240 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
1 Redhat enterprise_linux
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-6240.

URL Resource
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 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2250843 Issue Tracking
https://people.redhat.com/~hkario/marvin/ Third Party Advisory
https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ Technical Description
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 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2250843 Issue Tracking
https://people.redhat.com/~hkario/marvin/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20240628-0002/
https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ Technical Description

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Ini adalah repository kumpulan CVE v.5

allcve cve cvelist newcve

Updated: 4 months, 1 week ago
2 stars 0 fork 0 watcher
Born at : March 24, 2024, 3:01 p.m. This repo has been linked 1214 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-6240 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-6240 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2024:1881
    Added Reference https://access.redhat.com/errata/RHSA-2024:1882
    Added Reference https://access.redhat.com/errata/RHSA-2024:2758
    Added Reference https://access.redhat.com/errata/RHSA-2024:3414
    Added Reference https://access.redhat.com/errata/RHSA-2024:3421
    Added Reference https://access.redhat.com/errata/RHSA-2024:3618
    Added Reference https://access.redhat.com/errata/RHSA-2024:3627
    Added Reference https://access.redhat.com/security/cve/CVE-2023-6240
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2250843
    Added Reference https://people.redhat.com/~hkario/marvin/
    Added Reference https://security.netapp.com/advisory/ntap-20240628-0002/
    Added Reference https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
  • CVE Modified by [email protected]

    Sep. 14, 2024

    Action Type Old Value New Value
    Removed Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240628-0002/
  • CVE Modified by [email protected]

    Jun. 28, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240628-0002/ [No types assigned]
  • CVE Modified by [email protected]

    Jun. 05, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:3627 [No types assigned]
  • CVE Modified by [email protected]

    Jun. 05, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:3618 [No types assigned]
  • CVE Modified by [email protected]

    May. 29, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 28, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:3414 [No types assigned]
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:3421 [No types assigned]
  • CVE Modified by [email protected]

    May. 23, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 16, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 08, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2758 [No types assigned]
  • CVE Modified by [email protected]

    Apr. 18, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1881 [No types assigned]
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1882 [No types assigned]
  • CVE Modified by [email protected]

    Mar. 26, 2024

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-203
    Removed CWE Red Hat, Inc. CWE-327
  • CVE Modified by [email protected]

    Mar. 21, 2024

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-327
    Removed CWE Red Hat, Inc. CWE-203
  • CVE Modified by [email protected]

    Feb. 15, 2024

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-203
    Removed CWE Red Hat, Inc. CWE-402
  • Initial Analysis by [email protected]

    Feb. 13, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
    Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-6240 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-6240 Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2250843 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2250843 Issue Tracking
    Changed Reference Type https://people.redhat.com/~hkario/marvin/ No Types Assigned https://people.redhat.com/~hkario/marvin/ Third Party Advisory
    Changed Reference Type https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ No Types Assigned https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ Technical Description
    Added CWE NIST CWE-203
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • CVE Received by [email protected]

    Feb. 04, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2023-6240 [No types assigned]
    Added Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2250843 [No types assigned]
    Added Reference Red Hat, Inc. https://people.redhat.com/~hkario/marvin/ [No types assigned]
    Added Reference Red Hat, Inc. https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ [No types assigned]
    Added CWE Red Hat, Inc. CWE-402
    Added CVSS V3.1 Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-6240 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-6240 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.12 }} -0.00%

score

0.46839

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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