Philip Chinery Guestbook 1.1 HTML Field guestbook.pl Name/EMail/Homepage HTML injection

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.
5.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Philip Chinery Guestbook 1.1. This issue affects some unknown processing of the file guestbook.pl of the component HTML Field Handler. Executing a manipulation of the argument Name/EMail/Homepage can lead to HTML injection. This vulnerability is handled as CVE-2002-0730. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability has been found in Philip Chinery Guestbook 1.1 and classified as critical. This vulnerability affects an unknown part of the file guestbook.pl of the component HTML Field Handler. The manipulation of the argument Name/EMail/Homepage with an unknown input leads to a html injection vulnerability. The CWE definition for the vulnerability is CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Cross-site scripting vulnerability in guestbook.pl for Philip Chinery s Guestbook 1.1 allows remote attackers to execute Javascript or HTML via fields such as (1) Name, (2) EMail, or (3) Homepage.

The bug was discovered 04/21/2002. The weakness was released 08/12/2002 (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability was named CVE-2002-0730. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

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 113 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 10698 (Philip Chinery's Guestbook Script Injection Vulnerability).

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 X-Force (8916), Exploit-DB (21406), SecurityFocus (BID 4566†), OSVDB (8395†) and Vulnerability Center (SBV-6390†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: HTML injection
CWE: CWE-80 / CWE-74 / CWE-707
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

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/21/2002 🔍
04/21/2002 +0 days 🔍
08/12/2002 +113 days 🔍
08/12/2002 +0 days 🔍
08/12/2002 +0 days 🔍
12/12/2004 +853 days 🔍
07/22/2014 +3509 days 🔍
09/14/2025 +4072 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Status: Not defined

CVE: CVE-2002-0730 (🔍)
GCVE (CVE): GCVE-0-2002-0730
GCVE (VulDB): GCVE-100-18616
X-Force: 8916
SecurityFocus: 4566 - Philip Chinery's Guestbook Script Injection Vulnerability
OSVDB: 8395 - Philip Chinery`s Guestbook Perl script allows cross-site scripting
Vulnerability Center: 6390 - XSS in Philip Chinery\x27s Guestbook 1.1 via Name, Email, or Homepage Fields, Medium

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

Entryinfo

Created: 07/22/2014 22:46
Updated: 09/14/2025 07:11
Changes: 07/22/2014 22:46 (59), 06/04/2019 05:08 (3), 08/24/2024 01:02 (25), 09/14/2025 07:11 (4)
Complete: 🔍
Cache ID: 216:83D:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!