Main Vulnerability Database SB2021101348

SB2021101348 - Multiple path traversal vulnerabilities in DrayTek VigorConnect

Published: October 13, 2021 Updated: September 3, 2024

Security Bulletin ID SB2021101348

CSH Severity

High

Patch available

YES

Number of vulnerabilities 2

Exploitation vector Remote access

Highest impact Information disclosure

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal (CVE-ID: CVE-2021-20124)

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:A/U:Amber

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the file download functionality of the WebServlet endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

2) Path traversal (CVE-ID: CVE-2021-20123)

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:A/U:Amber

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the file download functionality of the DownloadFileServlet endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Remediation

Install update from vendor's website.

References

https://www.tenable.com/security/research/tra-2021-42