Microsoft Office 2000 ActiveX Control ouactrl.ocx first memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Microsoft Office 2000. The affected element is an unknown function of the file ouactrl.ocx of the component ActiveX Control. Such manipulation of the argument first leads to memory corruption. This vulnerability is referenced as CVE-2007-2903. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Office 2000 (Office Suite Software). Affected by this issue is an unknown functionality of the file ouactrl.ocx of the component ActiveX Control. The manipulation of the argument first 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 availability. CVE summarizes:

Buffer overflow in the HelpPopup method in the Microsoft Office 2000 Controllo UA di Microsoft Office ActiveX control (OUACTRL.OCX) 1.0.1.9 allows remote attackers to cause a denial of service (probably winhlp32.exe crash) via a long first argument. NOTE: it is not clear whether this issue crosses privilege boundaries.

The bug was discovered 05/23/2007. The weakness was published 05/23/2007 by shinnai (Website). The advisory is available at shinnai.altervista.org. This vulnerability is handled as CVE-2007-2903 since 05/29/2007. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available 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 2907 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110180 (Microsoft Office 2000 UA OUACTRL.OCX ActiveX Control Buffer Overflow Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Attack attempts may be identified with Snort ID 11622.

The vulnerability is also documented in the databases at X-Force (34473), Exploit-DB (3973), SecurityFocus (BID 24118†), OSVDB (36034†) and SecurityTracker (ID 1018107†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Snort ID: 11622

Timelineinfo

06/07/1999 🔍
05/23/2007 +2907 days 🔍
05/23/2007 +0 days 🔍
05/23/2007 +0 days 🔍
05/23/2007 +0 days 🔍
05/24/2007 +1 days 🔍
05/29/2007 +5 days 🔍
05/30/2007 +1 days 🔍
06/10/2007 +11 days 🔍
07/15/2007 +35 days 🔍
03/15/2015 +2799 days 🔍
06/08/2025 +3738 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: shinnai.altervista.org
Researcher: shinnai
Status: Not defined

CVE: CVE-2007-2903 (🔍)
GCVE (CVE): GCVE-0-2007-2903
GCVE (VulDB): GCVE-100-37010
X-Force: 34473
SecurityFocus: 24118 - Microsoft Office 2000 UA OUACTRL.OCX ActiveX Control Buffer Overflow Vulnerability
OSVDB: 36034 - Microsoft Office 2000 Controllo ActiveX (OUACTRL.OCX) HelpPopup Method Overflow
SecurityTracker: 1018107
Vulnerability Center: 15313 - Microsoft Office 2000 Active X Control Allows Remote Attacker to Cause DoS, Medium

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

Entryinfo

Created: 03/15/2015 15:58
Updated: 06/08/2025 17:14
Changes: 03/15/2015 15:58 (74), 07/20/2019 14:42 (1), 06/08/2025 17:14 (22)
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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