Vulnerability Details : CVE-2021-45268
A Cross Site Request Forgery (CSRF) vulnerability exists in Backdrop CMS 1.20, which allows Remote Attackers to gain Remote Code Execution (RCE) on the Hosting Webserver via uploading a maliciously add-on with crafted PHP file. NOTE: the vendor disputes this because the attack requires a session cookie of a high-privileged authenticated user who is entitled to install arbitrary add-ons
Vulnerability category: Cross-site request forgery (CSRF)Execute code
Products affected by CVE-2021-45268
- cpe:2.3:a:backdropcms:backdrop:1.20.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-45268
0.83%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 82 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-45268
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-45268
-
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-45268
-
https://github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS
GitHub - V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMSExploit;Third Party Advisory
-
https://www.exploit-db.com/exploits/50323
Backdrop CMS 1.20.0 - 'Multiple' Cross-Site Request Forgery (CSRF) - PHP webapps ExploitThird Party Advisory;VDB Entry
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