#VU58389 Path traversal in Apache APISIX - CVE-2021-43557
Published: November 26, 2021 / Updated: November 29, 2021
Vulnerability identifier: #VU58389
Vulnerability risk: Medium
CVSSv4.0: 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
CVE-ID: CVE-2021-43557
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Apache APISIX
Apache APISIX
Software vendor:
Apache Foundation
Apache Foundation
Description
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 request_uri parameter. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Remediation
Install update from vendor's website.