Risk | High |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2021-30150 CVE-2021-30149 |
CWE-ID | CWE-79 CWE-434 |
Exploitation vector | Network |
Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
Vulnerable software Subscribe |
Composr CMS Web applications / CMS |
Vendor | ocProducts |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU52054
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-30150
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: Yes
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the "ajax_tree.php" script. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationInstall update from vendor's website.
Vulnerable software versionsComposr CMS: 10.0.36
External linkshttp://packetstormsecurity.com/files/162111/Composr-CMS-10.0.36-Cross-Site-Scripting.html
http://gitlab.com/composr-foundation/composr/commit/833a06466
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. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU52056
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-30149
CWE-ID:
CWE-434 - Unrestricted Upload of File with Dangerous Type
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload a malicious file and execute it on the server.
MitigationInstall updates from vendor's website.
Vulnerable software versionsComposr CMS: 10.0.36
External linkshttp://packetstormsecurity.com/files/162128/Composr-10.0.36-Shell-Upload.html
http://gitlab.com/composr-foundation/composr/commit/a71c44e03
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. However, proof of concept for this vulnerability is available.