Info

Disclosure

May 22, 2004

Discovery

Unknown

Dates

Exploit

May 22, 2004

Solution

Unknown

Description

Linksys BEFSR41 and BEFW11S4 Routers contain a flaw that may allow an unauthorized information disclosure. The issue is triggered due to an error within the integrated DHCP server when handling BOOTP packets, which could be exploited by an malicious user to cause the device to crash, resulting in a router memory disclosure and loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Public
Disclosure: OSVDB Verified

Solution

Upgrade to version V1 1.45.11, V2 2.45.10, V3 2.50.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Cisco Systems, Inc.	BEFSR41 Cable/DSL Router	1.05.00 V3
		1.45.1 V1
		1.45.1 V2
		1.45.7 V1
		1.45.7 V2
	BEFW11S4 Cable/DSL Router	1.45.7

References

Bugtraq ID: 10329
Secunia Advisory ID: 11606
ISS X-Force ID: 16142
Generic Exploit URL: http://packetstormsecurity.nl/0405-exploits/linksys-dhcp-exploit.c
Vendor URL: http://www.linksys.com
Vendor Specific Solution URL: http://www.linksys.com/download/vertxt/befsr81v2_ver.txt
Generic Informational URL: http://www.theinquirer.net/?article=16298

Credit

Jon Hart - warchildspoofed.org -

Direct URL: http://osvdb.org/36218

Info

Disclosure

Discovery

Dates

Exploit

Solution

Description

Classification

Solution

Products

Cisco Systems, Inc.

BEFSR41 Cable/DSL Router

BEFW11S4 Cable/DSL Router

References

Credit