Authentication Bypass Vulnerability in ZOHO WebNMS Framework by ZOHO
CVE-2016-6603

9.8CRITICAL

Key Information:

Vendor

Zohocorp
Status
Webnms Framework
Vendor
CVE Published:
23 January 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 70%

What is CVE-2016-6603?

The ZOHO WebNMS Framework versions 5.2 and 5.2 SP1 are susceptible to an authentication bypass vulnerability that enables remote attackers to impersonate arbitrary users by manipulating the UserName HTTP header. This flaw can potentially allow unauthorized access and may lead to further exploitation within the affected system. It is crucial for users of these versions to implement immediate security measures and updates to protect against unauthorized access.

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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-2016-6603 - Proof of Concept

References

http://seclists.org/fulldisclosure/2016/Aug/54
mailing-listx_refsource_FULLDISC
https://forums.webnms.com/topic/recent-vulnerabilities-in...
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http://www.securityfocus.com/bid/92402
vdb-entryx_refsource_BID

EPSS Score

70% 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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