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.
6.8	$0-$5k	0.00

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 7 (Web Browser). This issue affects an unknown code in the library HRTBEAT.OCX of the component HeartbeatCtl ActiveX Control. The manipulation of the argument Host 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 the Microsoft HeartbeatCtl ActiveX control in HRTBEAT.OCX allows remote attackers to execute arbitrary code via the Host argument to an unspecified method.

The issue has been introduced in 07/27/2005. The weakness was published 04/23/2008 by Will Dormann with CERT/CC as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. The identification of this vulnerability is CVE-2007-6255. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/31/2021). It is expected to see the exploit prices for this product decreasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 867 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 100054 (Cumulative Security Update for Internet Explorer (MS07-069)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (41940). Similar entries are available at 3506, 3509, 3507 and 3508.

Productinfo

Type

• Web Browser

Vendor

• Microsoft

Name

• Internet Explorer

Version

• 7

License

• commercial

Support

• end of life

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/27/2005 🔍
12/05/2007 +860 days 🔍
12/11/2007 +6 days 🔍
04/21/2008 +132 days 🔍
04/21/2008 +0 days 🔍
04/23/2008 +2 days 🔍
04/23/2008 +0 days 🔍
04/29/2008 +6 days 🔍
04/06/2011 +1071 days 🔍
03/16/2015 +1440 days 🔍
07/31/2021 +2329 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: kb.cert.org
Researcher: Will Dormann
Organization: CERT/CC
Status: Confirmed

CVE: CVE-2007-6255 (🔍)
X-Force: 41940
Vulnerability Center: 30917 - Microsoft HeartbeatCtl ActiveX control Remote Buffer Overflow Vulnerability via the Host Argument, Critical
SecurityFocus: 28882 - Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability
OSVDB: 44652 - Microsoft HeartbeatCtl HRTBEAT.OCX ActiveX Unspecified Method Host Argument Overflow

See also: 🔍

Entryinfo

Created: 03/16/2015 17:00
Updated: 07/31/2021 19:23
Changes: 03/16/2015 17:00 (61), 04/07/2017 12:18 (12), 07/31/2021 19:23 (2)
Complete: 🔍

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