CVE-2021-3243 — MEDIUM (6.1)

Vulnerability Description

Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same LAN can craft a packet with a malicious User-Agent header to inject a payload in its logs, where an attacker can take over the system by through its plugin-running function.

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Wfiltericf	Wfilter Internet Content Filter	5.0.117

Related Weaknesses (CWE)

CWE-79

References

https://drivertom.blogspot.com/2021/01/wfilter-icf-0day-rce.htmlExploitThird Party Advisory
https://drivertom.blogspot.com/2021/01/wfilter-icf-0day-rce.htmlExploitThird Party Advisory

FAQ

What is CVE-2021-3243?

CVE-2021-3243 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same LAN can craft a packet with a malicious User-Agent header to inject a payload in its logs, where an att...

How severe is CVE-2021-3243?

CVE-2021-3243 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-3243?

Check the references section above for vendor advisories and patch information. Affected products include: Wfiltericf Wfilter Internet Content Filter.