SB2021010718 - Path traversal in Ffay lanproxy

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2021-3019)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted URL request containing "dot dot" sequences (/../) to access conf/config.properties on the system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://github.com/ffay/lanproxy/commits/master
• https://github.com/maybe-why-not/lanproxy/issues/1