SB2021052535 - Open redirect in trailing-slash package for npm

Description

This security bulletin contains information about 1 vulnerability.

1) Open redirect (CVE-ID: CVE-2021-23387)

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to the use of trailing double slashes in the URL when accessing the vulnerable endpoint. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Remediation

Install update from vendor's website.

References

• https://github.com/fardog/trailing-slash/blob/f640ece055fe85275c983de5eb94661b95e35670/index.js%23L36
• https://snyk.io/vuln/SNYK-JS-TRAILINGSLASH-1085707
• https://github.com/fardog/trailing-slash/commit/f8e66f1429308247e5a119d430203077d8f05048