Arbitrary file read in SonicWall Secure Remote Access

1) Path traversal

EUVDB-ID: #VU62295

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:H/RL:U/RC:C]

CVE-ID: CVE-2022-22279

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

Exploit availability: No

Description

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

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Note, the vulnerability is being actively exploited in the wild along with #VU62294 (CVE-2021-20028).

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability. The product has reached end of life and no patches are expected to be released.

Vulnerable software versions

SonicWall Secure Remote Access (SRA): 9.0.0.5-19sv

External links

http://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0006

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.