High severity · published Feb 3, 2022
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…
8.8
CVSS
1.8%
EPSS
No
On KEV
Description
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Backdrop · Backdropcms
1.20.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45268
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45268
Exploit
https://github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS
Third Party Advisory
https://www.exploit-db.com/exploits/50323
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