File Upload Vulnerability in Zenitel AlphaCom XE Audio Server
CVE-2021-40845

8.8HIGH

Key Information:

Vendor

Zenitel

Status
Alphacom Xe Audio Server
Vendor
CVE Published:
15 September 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 26%

What is CVE-2021-40845?

The Zenitel AlphaCom XE Audio Server delivers audio services over networks but suffers from a significant security flaw in its web component, AlphaWeb XE. This vulnerability arises from the lack of restrictions on file uploads within the Custom Scripts section, specifically at php/index.php. As a result, attackers can upload malicious files without restriction, leading to the potential execution of arbitrary PHP code within the server's /cmd directory. This oversight not only compromises the integrity of the server but also poses a substantial risk of unauthorized access and control over the vulnerable system.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-40845
Created by ricardojoserf

References

http://packetstormsecurity.com/files/164149/Zenitel-Alpha...
x_refsource_MISC
https://github.com/ricardojoserf/CVE-2021-40845
x_refsource_MISC
https://ricardojoserf.github.io/CVE-2021-40845/
x_refsource_MISC

EPSS Score

26% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

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