Hilgraeve HyperTerminal 6.0 Telnet URI memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Hilgraeve HyperTerminal 6.0 and classified as critical. Affected is an unknown function of the component Telnet URI Handler. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2000-0991. Moreover, an exploit is present. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Hilgraeve HyperTerminal 6.0. Affected by this issue is an unknown code of the component Telnet URI Handler. 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. CVE summarizes:

Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote attackers to execute arbitrary commands via a long telnet URL, aka the "HyperTerminal Buffer Overflow" vulnerability.

The weakness was disclosed 12/19/2000 by Ussr Labs with Microsoft (Website). The advisory is available at xforce.iss.net. This vulnerability is handled as CVE-2000-0991. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

Upgrading to version 6.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5387), Exploit-DB (20307), SecurityFocus (BID 1815†) and Vulnerability Center (SBV-3138†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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
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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: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: HyperTerminal 6.1

Timelineinfo

10/18/2000 🔍
10/18/2000 +0 days 🔍
12/19/2000 +62 days 🔍
12/19/2000 +0 days 🔍
12/11/2003 +1087 days 🔍
07/02/2014 +3856 days 🔍
02/03/2025 +3869 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: Ussr Labs
Organization: Microsoft
Status: Confirmed

CVE: CVE-2000-0991 (🔍)
GCVE (CVE): GCVE-0-2000-0991
GCVE (VulDB): GCVE-100-16202
X-Force: 5387
SecurityFocus: 1815 - Hilgraeve HyperTerminal Telnet Buffer Overflow Vulnerability
Vulnerability Center: 3138 - [MS00-079] Buffer Overflow in Hilgraeve Inc. HyperTerminal Client Allows Arbitrary Code Execution, Critical

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

Entryinfo

Created: 07/02/2014 11:22
Updated: 02/03/2025 07:00
Changes: 07/02/2014 11:22 (56), 05/18/2019 09:07 (4), 02/03/2025 07:00 (27)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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