Vulnerability Name:

CVE-2020-19201 (CCN-205448)

Assigned:2020-08-13
Published:2020-08-13
Updated:2021-09-14
Summary:A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
CVSS v3 Severity:5.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
6.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-79
Vulnerability Consequences:Cross-Site Scripting
References:Source: MITRE
Type: CNA
CVE-2020-19201

Source: CCN
Type: Netgate Web site
2.4.4-p3 New Features and Changes

Source: MISC
Type: Product, Vendor Advisory
https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html

Source: XF
Type: UNKNOWN
netgate-pfsense-cve202019201-xss(205448)

Source: MISC
Type: Exploit, Third Party Advisory
https://gist.github.com/dharmeshbaskaran/fd3779006361d07651a883e8a040d916

Source: MISC
Type: Vendor Advisory
https://www.pfsense.org/download/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:*
  • OR cpe:/a:netgate:pfsense:2.4.4:p2:*:*:*:*:*:*
  • OR cpe:/a:netgate:pfsense:*:*:*:*:*:*:*:* (Version <= 2.4.4)

    • Configuration CCN 1:
  • cpe:/a:pfsense:pfsense:2.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:netgate:pfsense:2.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.2.2:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.2.5:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.2.6:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.3.2:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.4.1:*:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.4.4:p1:*:*:*:*:*:*
  • OR cpe:/a:pfsense:pfsense:2.4.4:p2:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    netgate pfsense 2.4.4 p1
    netgate pfsense 2.4.4 p2
    netgate pfsense *
    pfsense pfsense 2.0.1
    pfsense pfsense 2.1.3
    pfsense pfsense 2.2.2
    pfsense pfsense 2.2.5
    pfsense pfsense 2.2.6
    pfsense pfsense 2.3.2
    pfsense pfsense 2.4.1
    pfsense pfsense 2.4.4 p1
    pfsense pfsense 2.4.4 p2