CVE-2007-4991

Microsoft ISA Server SOCKS4 Proxy Connection Leakage Vulnerability

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The SOCKS4 Proxy in Microsoft Internet Security and Acceleration (ISA) Server 2004 SP1 and SP2 allows remote attackers to obtain potentially sensitive information (the destination IP address of another user's session) via an empty packet.

El proxy SOCKS4 de Microsoft Internet Security and Acceleration (ISA) Server 2004 SP1 y SP2 permite a atacantes remotos obtener información potencialmente confidencial (la dirección IP destino de la sesión de otro usuario) mediante un paquete vacío.

This vulnerability allows remote attackers to extract IP addresses visited through the SOCKS4 Proxy on vulnerable ISA Server installations. Authentication is not required to exploit this vulnerability.
This specific flaw exists when an empty packet is sent to the SOCKS4. The server will return a packet containing the last IP address it proxied to.

*Credits: CIRT.DK

CVSS Scores

NISTv2 5.0

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2007-09-20 CVE Reserved
2007-09-20 CVE Published
2024-07-25 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (5)

URL	Tag	Source
http://osvdb.org/45906	Vdb Entry
http://www.securitytracker.com/id?1018727	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/36715	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://www.securityfocus.com/bid/25753	2017-07-29
http://www.zerodayinitiative.com/advisories/ZDI-07-053.html	2017-07-29

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Isa Server Search vendor "Microsoft" for product "Isa Server"				2004 Search vendor "Microsoft" for product "Isa Server" and version "2004"		sp1		Affected
Microsoft Search vendor "Microsoft"		Isa Server Search vendor "Microsoft" for product "Isa Server"				2004 Search vendor "Microsoft" for product "Isa Server" and version "2004"		sp2		Affected