Security Advisory SA49868 - Cisco Linksys WMB54G TFTP Command Injection Vulnerability

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Secunia Advisory SA49868

Cisco Linksys WMB54G TFTP Command Injection Vulnerability

Secunia Advisory

SA49868

Release Date

2012-07-20

Popularity

4,683 views

Comments

0 comments

Criticality level

Moderately critical

Impact

System access

Where

From local network

Authentication level

This information is available to Secunia VIM customers

Report reliability

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Solution Status

Unpatched

Systems affected

This information is available to Secunia VIM customers

Approve distribution

This information is available to Secunia VIM customers

Remediation status

Secunia VIM

Operating System

Cisco Linksys WMB54G 1.x

Secunia CVSS Score

This information is available to Secunia VIM Customers

CVE Reference(s)

No CVE references.

Description

Craig has reported a vulnerability in Cisco Linksys WMB54G, which can be exploited by malicious people to compromise a vulnerable device.

The vulnerability is caused due to missing input validation in the TFTP service when running the firmware update functionality and can be exploited to inject and execute arbitrary shell commands.

NOTE: Additionally, it may be possible to apply malicious firmware images uploaded via the TFTP service to the device.

The vulnerability is reported in version 1 running firmware version 2.18. Other versions may also be affected.

Solution
No official solution is currently available.

Provided and/or discovered by
Craig, /dev/ttyS0

Original Advisory
Craig:
http://www.devttys0.com/2012/07/hacking-the-linksys-wmb54g/

Deep Links
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Cisco Linksys WMB54G TFTP Command Injection Vulnerability

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Secunia Advisory SA49868

Cisco Linksys WMB54G TFTP Command Injection Vulnerability

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