John Roy Pi3Web 1.0.1 URL tstisapi.dll memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in John Roy Pi3Web 1.0.1. It has been classified as critical. Affected by this vulnerability is an unknown functionality in the library tstisapi.dll of the component URL Handler. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2001-0302. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in John Roy Pi3Web 1.0.1. It has been classified as critical. This affects an unknown code block in the library tstisapi.dll of the component URL Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in tstisapi.dll in Pi3Web 1.0.1 web server allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long URL.

The weakness was published 05/03/2001 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2001-0302. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 10618 (Pi3Web tstisap.dll Long URL Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86084 (John Roy Pi3Web Buffer Overflow Vulnerability).

Upgrading to version 1.0.3 eliminates this vulnerability. Attack attempts may be identified with Snort ID 902. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 962.

The vulnerability is also documented in the databases at X-Force (6113), Exploit-DB (20634), Tenable (10618), SecurityFocus (BID 2381†) and Vulnerability Center (SBV-1939†). Similar entry is available at VDB-16666. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

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

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 10618
Nessus Name: Pi3Web tstisap.dll Long URL Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Pi3Web 1.0.3

Snort ID: 902
Snort Message: SERVER-WEBAPP tstisapi.dll access
Snort Class: 🔍
TippingPoint: 🔍
SourceFire IPS: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

02/15/2001 🔍
02/15/2001 +0 days 🔍
02/20/2001 +5 days 🔍
05/03/2001 +72 days 🔍
05/03/2001 +0 days 🔍
09/04/2003 +854 days 🔍
07/04/2014 +3956 days 🔍
10/07/2025 +4113 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2001-0302 (🔍)
GCVE (CVE): GCVE-0-2001-0302
GCVE (VulDB): GCVE-100-16665
X-Force: 6113
SecurityFocus: 2381 - John Roy Pi3Web Buffer Overflow Vulnerability
Vulnerability Center: 1939 - Buffer Overflow in tstisapi.dll in Pi3Web 1.0.1 Web Server, High

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

Entryinfo

Created: 07/04/2014 10:45
Updated: 10/07/2025 12:40
Changes: 07/04/2014 10:45 (71), 05/12/2019 11:34 (2), 06/25/2021 14:58 (3), 01/27/2025 10:46 (25), 10/07/2025 12:40 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!