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Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.

Critical severity GitHub Reviewed Published Sep 27, 2022 in Orckestra/C1-CMS-Foundation • Updated Apr 3, 2023

Package

nuget CompositeC1.Core (NuGet)

Affected versions

< 6.13

Patched versions

6.13

Description

Impact

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS.
Authentication is required to exploit this vulnerability.
The authenticated user may perform the actions unknowingly by visiting a specially crafted site.

Patches

Patched in C1 CMS v6.13

Workarounds

Upgrade to C1 CMS v6.13 or newer is required

Credit

This issue was discovered and reported by Markus Wulftange / Code White GmbH.

References

@napernik napernik published to Orckestra/C1-CMS-Foundation Sep 27, 2022
Published by the National Vulnerability Database Sep 27, 2022
Published to the GitHub Advisory Database Sep 30, 2022
Reviewed Sep 30, 2022
Last updated Apr 3, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS score

0.707%
(81st percentile)

Weaknesses

CVE ID

CVE-2022-39256

GHSA ID

GHSA-gfhp-jgp6-838j

Source code

Credits

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