VDB-39265 · CVE-2007-5456 · BID 26062

Microsoft Internet Explorer up to 7 Download Security code injection

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.
6.6$0-$5k0.00

A vulnerability was found in Microsoft Internet Explorer up to 7 (Web Browser). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Download Security Handler. The manipulation with the input value <url>?.txt leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Internet Explorer 7 and earlier allows remote attackers to bypass the "File Download - Security Warning" dialog box and download arbitrary .exe files by placing a ? (question mark) followed by a non-.exe filename after the .exe filename, as demonstrated by (1) .txt, (2) .cda, (3) .log, (4) .dif, (5) .sol, (6) .htt, (7) .itpc, (8) .itms, (9) .dvr-ms, (10) .dib, (11) .asf, (12) .tif, and unspecified other extensions, a different issue than CVE-2004-1331. NOTE: this issue might not cross privilege boundaries, although it does bypass an intended protection mechanism.

The weakness was published 10/14/2007 as not defined posting (Bugtraq). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2007-5456 since 10/14/2007. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1059 for this issue.

It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

Upgrading eliminates this vulnerability.

Productinfo

Type

Vendor

Name

License

  • commercial

Support

  • end of life

CPE 2.3info

CPE 2.2info

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: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
ATT&CK: T1059

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/13/2007 🔍
10/14/2007 +1 days 🔍
10/14/2007 +0 days 🔍
10/14/2007 +0 days 🔍
03/16/2015 +2710 days 🔍
07/29/2021 +2327 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2007-5456 (🔍)
SecurityFocus: 26062 - Microsoft Internet Explorer Extension Filter Bypass Arbitrary File Download Vulnerability

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

Entryinfo

Created: 03/16/2015 12:18 PM
Updated: 07/29/2021 10:22 AM
Changes: 03/16/2015 12:18 PM (48), 04/07/2017 12:09 PM (4), 07/29/2021 10:22 AM (7)
Complete: 🔍

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