Microsoft PhoneBook Server memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft PhoneBook Server. It has been rated as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2000-1089. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Microsoft PhoneBook Server (version unknown). This issue affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Microsoft Phone Book Service allows local users to execute arbitrary commands, aka the "Phone Book Service Buffer Overflow" vulnerability.

The weakness was disclosed 01/09/2001 by Alberto Solino with Core (Website). It is possible to read the advisory at stake.com. The identification of this vulnerability is CVE-2000-1089. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2025).

The exploit is available at exploit-db.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 10564 (Microsoft IIS Phone Book Service /pbserver/pbserver.dll Remote Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11236 (Microsoft PhoneBook Server Buffer Overflow Vulnerability (MS00-094)).

Applying a patch is able to eliminate this problem. Attack attempts may be identified with Snort ID 1772. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 3180.

The vulnerability is also documented in the databases at X-Force (5623), Exploit-DB (16357), Tenable (10564), SecurityFocus (BID 2048†) and Vulnerability Center (SBV-1238†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10564
Nessus Name: Microsoft IIS Phone Book Service /pbserver/pbserver.dll Remote Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms00_094_pbserver.rb
MetaSploit Name: MS00-094 Microsoft IIS Phone Book Service Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Snort ID: 1772
Snort Message: SERVER-IIS pbserver access
Snort Class: 🔍
TippingPoint: 🔍
SourceFire IPS: 🔍
PaloAlto IPS: 🔍

Timelineinfo

12/04/2000 🔍
12/06/2000 +2 days 🔍
01/09/2001 +34 days 🔍
01/09/2001 +0 days 🔍
01/09/2001 +0 days 🔍
06/23/2003 +895 days 🔍
07/02/2014 +4027 days 🔍
10/11/2025 +4119 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: stake.com
Researcher: Alberto Solino
Organization: Core
Status: Confirmed

CVE: CVE-2000-1089 (🔍)
GCVE (CVE): GCVE-0-2000-1089
GCVE (VulDB): GCVE-100-16247
X-Force: 5623 - Microsoft Windows NT and 2000 Phone Book service buffer overflow
SecurityFocus: 2048 - Microsoft PhoneBook Server Buffer Overflow
Vulnerability Center: 1238 - [MS00-094] Buffer Overflow in Microsoft Phone Book Service on IIS Allows Command Execution, Medium

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

Entryinfo

Created: 07/02/2014 12:12
Updated: 10/11/2025 20:54
Changes: 07/02/2014 12:12 (74), 05/10/2019 09:04 (1), 05/18/2025 17:31 (21), 10/11/2025 20:54 (6)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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