Open Redirect Affecting showdoc/showdoc package, versions <2.9.13


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.07% (35th percentile)

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  • Snyk IDSNYK-PHP-SHOWDOCSHOWDOC-1933679
  • published1 Dec 2021
  • disclosed1 Dec 2021
  • creditChau Minh Khanh

Introduced: 1 Dec 2021

CVE-2021-3989  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade showdoc/showdoc to version 2.9.13 or higher.

Overview

showdoc/showdoc is a tool for an IT team to share documents online.

Affected versions of this package are vulnerable to Open Redirect via the login page due to unchecked redirect parameter.

###POC:

Send users the following login link:

https://www.showdoc.com.cn/user/login?redirect=/%09/google.com

After users use their registered account to login, they will be redirected to google.com

References

CVSS Scores

version 3.1