GHSA-8pp6-8x4q-c5mx — high GitHub Advisory (CVE-2022-24789) in nuget/C1CMS.Assemblies

Description

C1 CMS is an open-source, .NET based Content Management System (CMS). Versions prior to 6.12 allow an authenticated user to exploit Server Side Request Forgery (SSRF) by causing the server to make arbitrary GET requests to other servers in the local network or on localhost. The attacker may also truncate arbitrary files to zero size (effectively delete them) leading to denial of service (DoS) or altering application logic. The authenticated user may unknowingly perform the actions by visiting a specially crafted site. Patched in C1 CMS v6.12, no known workarounds exist.

Basic information

Type: reviewed
Severity: high
Advisory on GitHub: Open advisory ↗
Repository advisory: —
Source code: Browse source ↗
Published (advisory): 2022-03-30 00:00:31 UTC
Updated: 2023-01-27 05:01:14 UTC
GitHub reviewed: 2022-04-07 15:30:27 UTC
NVD published: 2022-03-28

Score	Percentile
0.27%	49.84%

CVSS Scores

Base score	Version	Severity	Vector
7.6	3.1	—	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type	Value
GHSA	GHSA-8pp6-8x4q-c5mx ↗
CVE	CVE-2022-24789 ↗

CWEs

CWE id	Name
CWE-918	Server-Side Request Forgery (SSRF)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
nuget	C1CMS.Assemblies	<= 6.11.7982.26191	6.12.8122.18346	—

Server side request forgery in C1 CMS