#VU58389 Path traversal in Apache APISIX


Published: 2021-11-29

Vulnerability identifier: #VU58389

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-43557

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache APISIX
Server applications / Other server solutions

Vendor: 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Apache APISIX: 2.10.0 - 2.10.1


External links
http://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h
http://www.openwall.com/lists/oss-security/2021/11/22/2
http://www.openwall.com/lists/oss-security/2021/11/22/1
http://www.openwall.com/lists/oss-security/2021/11/23/1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.


Latest bulletins with this vulnerability