PT-2021-21676 · Nch · Nch Axon Pbx

Published 2021-07-25 · Updated 2021-07-28 · CVE-2021-37461

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions NCH Axon PBX versions 2.22 and earlier

Description A Cross Site Scripting (XSS) issue exists, allowing for reflected XSS attacks via the "/extensionsinstruction?id=" endpoint. This can potentially lead to malicious script execution.

Recommendations For NCH Axon PBX versions 2.22 and earlier, consider disabling access to the "/extensionsinstruction?id=" endpoint until a fix is available. As a temporary workaround, restrict the use of the id parameter in this endpoint to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-37461

Affected Products

Nch Axon Pbx

References · 4

• 🔥 https://github.com/0xfml/poc/blob/main/NCH/Axon_2.22_XSS.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-37461 · Security Note
• https://osv.dev/vulnerability/CVE-2021-37461 · Vendor Advisory
• https://nch.com.au/pbx/index.html · Note