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wappalyzer@4.1.0 vulnerabilities

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Direct Vulnerabilities

Known vulnerabilities in the wappalyzer package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • H
Regular Expression Denial of Service (ReDoS)

wappalyzer is an identifies technologies on websites. It detects content management systems, ecommerce platforms, JavaScript frameworks, analytics tools and much more.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the Impala regex.

PoC by Matheus Vrech

  1. Create a web page with the following tag:
  2. Now open this page using wappalyzer extension in browser or it's cli
  3. Wappalyzer will stop answering and it's CPU percentage will start to increase to high levels

How to fix Regular Expression Denial of Service (ReDoS)?

Upgrade wappalyzer to version 6.0.6 or higher.

<6.0.6
  • H
Regular Expression Denial of Service (ReDoS)

wappalyzer is an identifies technologies on websites. It detects content management systems, ecommerce platforms, JavaScript frameworks, analytics tools and much more.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS). An attacker can make wappalyzer (all drivers, like browser extension and cli) stop working due to ReDoS in one of it's services regex.

PoC by abrasax

  • Create a web page with the following tag:<script src='//c.c..j..c.c..j..c.c..j..c.c..j..c.c..j..c.c..j..c.c..j..c.c..j..jskhtlcnipmos.cdnjs.cdnjs.dnjs.cdnjs.cloudflar.jsjs.cloudf'></script>
  • Now open this page using wappalyzer extension in browser or it's cli3. Wappalyzer will stop answering and it's CPU percentage will start to increase to high levels

How to fix Regular Expression Denial of Service (ReDoS)?

Upgrade wappalyzer to version 6.0.3 or higher.

<6.0.3
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