DNSTools 2.0 Beta3/2.0 Beta4 Authentication dnstools.php user_logged_in/user_dnstools_administrator improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in DNSTools 2.0 Beta3/2.0 Beta4. Affected is an unknown function of the file dnstools.php of the component Authentication. Executing a manipulation of the argument user_logged_in/user_dnstools_administrator can lead to improper authentication. This vulnerability is tracked as CVE-2002-0613. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in DNSTools 2.0 Beta3/2.0 Beta4 and classified as very critical. This vulnerability affects an unknown functionality of the file dnstools.php of the component Authentication. The manipulation of the argument user_logged_in/user_dnstools_administrator with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

dnstools.php for DNSTools 2.0 beta 4 and earlier allows remote attackers to bypass authentication and gain privileges by setting the user_logged_in or user_dnstools_administrator parameters.

The bug was discovered 04/28/2002. The weakness was disclosed 06/18/2002 by ppp-design (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability was named CVE-2002-0613. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/15/2025).

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 51 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:dnstools.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 10732 (DNSTools Authentication Bypass Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Attack attempts may be identified with Snort ID 1739.

The vulnerability is also documented in the databases at X-Force (8948), Exploit-DB (21425), SecurityFocus (BID 4617†), OSVDB (5176†) and Vulnerability Center (SBV-6555†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Snort ID: 1739
Snort Message: SERVER-WEBAPP DNSTools administrator authentication bypass attempt
Snort Class: 🔍

Suricata ID: 2101739
Suricata Class: 🔍
Suricata Message: 🔍
SourceFire IPS: 🔍

Timelineinfo

04/28/2002 🔍
04/28/2002 +0 days 🔍
04/28/2002 +0 days 🔍
06/18/2002 +51 days 🔍
06/18/2002 +0 days 🔍
12/16/2004 +912 days 🔍
07/11/2014 +3494 days 🔍
09/15/2025 +4084 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Researcher: ppp-design
Status: Not defined
Confirmation: 🔍

CVE: CVE-2002-0613 (🔍)
GCVE (CVE): GCVE-0-2002-0613
GCVE (VulDB): GCVE-100-18292
X-Force: 8948
SecurityFocus: 4617 - DNSTools Authentication Bypass Vulnerability
OSVDB: 5176 - DNSTools - Authentication Bypass Issue
Vulnerability Center: 6555 - DNSTools Software DNSTools 2.0 Beta 3, 2.0 Beta 4 Allows Bypassing Authentication, High

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

Entryinfo

Created: 07/11/2014 14:12
Updated: 09/15/2025 02:08
Changes: 07/11/2014 14:12 (67), 06/03/2019 18:54 (3), 01/05/2025 17:55 (27), 09/15/2025 02:08 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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