Remote code execution in Backdrop CMS
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-36193 |
| CWE-ID | CWE-61 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
Backdrop CMS Web applications / CMS |
| Vendor | Backdrop CMS |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 28.01.2021
Changed bulletin status to patched.
1) UNIX symbolic link following
EUVDB-ID: #VU49907
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-36193
CWE-ID:
CWE-61 - UNIX Symbolic Link (Symlink) Following
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a symlink following issue in tar.php file in Archive_Tar. A remote attacker can pass specially crafted archive to the application and force the application to overwrite arbitrary files on the system using directory traversal sequences.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
Install update from vendor's website.
Backdrop CMS: 1.0.0 - 1.18.0
External linkshttp://backdropcms.org/security/backdrop-sa-core-2021-001
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
