BG Guestbook 1.0 Tag signgbook.php name/email/aim/website/location/message cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in BG Guestbook 1.0. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the file signgbook.php of the component Tag Handler. Performing a manipulation of the argument name/email/aim/website/location/message results in cross site scripting. This vulnerability was named CVE-2002-0457. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in BG Guestbook 1.0. This affects an unknown code block of the file signgbook.php of the component Tag Handler. The manipulation of the argument name/email/aim/website/location/message with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Cross-site scripting vulnerability in signgbook.php for BG GuestBook 1.0 allows remote attackers to execute arbitrary Javascript via encoded tags such as <, >, and & in fields such as (1) name, (2) email, (3) AIM screen name, (4) website, (5) location, or (6) message.

The weakness was presented 08/12/2002 by Ahmet Sabri Alper as not defined posting (Bugtraq). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2002-0457. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

By approaching the search of inurl:signgbook.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 10523 (BG Guestbook Cross-Site Scripting 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 (8474), SecurityFocus (BID 4308†) and Vulnerability Center (SBV-6415†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
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: Cross site scripting
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/16/2002 🔍
08/12/2002 +149 days 🔍
08/12/2002 +0 days 🔍
08/12/2002 +0 days 🔍
12/12/2004 +853 days 🔍
07/22/2014 +3509 days 🔍
09/17/2025 +4075 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Ahmet Sabri Alper
Status: Not defined

CVE: CVE-2002-0457 (🔍)
GCVE (CVE): GCVE-0-2002-0457
GCVE (VulDB): GCVE-100-18513
X-Force: 8474
SecurityFocus: 4308 - BG Guestbook Cross-Agent Scripting Vulnerability
Vulnerability Center: 6415 - XSS in BG Guestbook 1.0 via signgbook.php, Medium

Entryinfo

Created: 07/22/2014 21:21
Updated: 09/17/2025 06:55
Changes: 07/22/2014 21:21 (58), 01/27/2018 12:41 (1), 09/17/2025 06:55 (17)
Complete: 🔍
Cache ID: 216::103

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

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