Stack-Based Buffer Overflow in EFS Software Easy Chat Server
CVE-2017-9544

9.8CRITICAL

Key Information:

Vendor

Echatserver

Status
Easy Chat Server
Vendor
CVE Published:
12 June 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 79%

What is CVE-2017-9544?

A remote stack-based buffer overflow vulnerability exists in the 'register.ghp' component of EFS Software Easy Chat Server versions 2.0 to 3.1. By submitting an overly long username through the 'registresult.htm' page, an attacker could potentially trigger the vulnerability, allowing for arbitrary code execution on the server. This exploitation could lead to unauthorized access and manipulation of the server’s functions, heightening the necessity for immediate mitigation.

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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-2017-9544
Created by adenkiewicz

References

https://www.exploit-db.com/exploits/42155/
exploitx_refsource_EXPLOIT-DB

EPSS Score

79% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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