CVE-2008-3803

Cisco Security Advisory 20080924-vpn

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.

Un "error lógico" en Cisco IOS v12.0 a la v12.4, cuando está configurado un Multiprotocol Label Switching (MPLS) VPN "extendida a comunidades" (extended communities), en ocasiones provoca que sea usado un destino de ruta corrupta, lo que permite a atacantes remotos leer el tráfico de red desde otras VPN's en determinadas circunstancias.

Devices running Cisco IOS versions 12.0S, 12.2, 12.3 or 12.4 and configured for Multiprotocol Label Switching (MPLS) Virtual Private Networks (VPNs) or VPN Routing and Forwarding Lite (VRF Lite) and using Border Gateway Protocol (BGP) between Customer Edge (CE) and Provider Edge (PE) devices may permit information to propagate between VPNs. Workarounds are available to help mitigate this vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2008-08-27 CVE Reserved
2008-09-25 CVE Published
2024-08-07 CVE Updated
2025-06-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (5)

URL	Tag	Source
http://secunia.com/advisories/31990	Third Party Advisory
http://www.securityfocus.com/bid/31366	Third Party Advisory
http://www.securitytracker.com/id?1020940	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5919	Signature

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a014a9.shtml	2022-06-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.0s Search vendor "Cisco" for product "Ios" and version "12.0s"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.0sx Search vendor "Cisco" for product "Ios" and version "12.0sx"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				12.0sz Search vendor "Cisco" for product "Ios" and version "12.0sz"		-		Affected