Zoho WebNMS Framework 5.2/5.2 SP1 HTTP Header Username input validation

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Zoho WebNMS Framework 5.2/5.2 SP1. It has been rated as critical. This affects an unknown function of the component HTTP Header Handler. This manipulation of the argument Username causes input validation. This vulnerability is handled as CVE-2016-6603. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Zoho WebNMS Framework 5.2/5.2 SP1. Affected by this vulnerability is an unknown function of the component HTTP Header Handler. The manipulation of the argument UserName with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ZOHO WebNMS Framework 5.2 and 5.2 SP1 allows remote attackers to bypass authentication and impersonate arbitrary users via the UserName HTTP header.

The bug was discovered 08/08/2016. The weakness was released 01/23/2017 by Pedro Ribeiro as EDB-ID 40229 as not defined exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is known as CVE-2016-6603 since 08/04/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed by Pedro Ribeiro and been published even before and not after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 168 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11686 (WebNMS Framework Multiple Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (40229) and SecurityFocus (BID 92402†). Entries connected to this vulnerability are available at VDB-95848, VDB-95849 and VDB-95850. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Pedro Ribeiro
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 100891
OpenVAS Name: WebNMS 5.2 / 5.2 SP1 Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/04/2016 🔍
08/08/2016 +4 days 🔍
08/08/2016 +0 days 🔍
08/10/2016 +2 days 🔍
08/10/2016 +0 days 🔍
01/23/2017 +166 days 🔍
01/23/2017 +0 days 🔍
01/24/2017 +1 days 🔍
05/14/2026 +3397 days 🔍

Sourcesinfo

Advisory: EDB-ID 40229
Researcher: Pedro Ribeiro
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6603 (🔍)
GCVE (CVE): GCVE-0-2016-6603
GCVE (VulDB): GCVE-100-95851
SecurityFocus: 92402 - WebNMS Framework Multiple Security Vulnerabilities
OSVDB: - CVE-2016-6603 - ZOHO - WebNMS - Impersonation Issue

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/24/2017 08:33
Updated: 05/14/2026 15:34
Changes: 01/24/2017 08:33 (76), 07/30/2020 16:56 (6), 09/02/2024 12:42 (16), 05/14/2026 15:34 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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