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Linksys SMART WiFi firmware contains multiple vulnerabilities

Vulnerability Note VU#447516

Original Release Date: 2014-10-31 | Last Revised: 2014-11-07

Overview

Linksys EA series routers running the Linksys SMART WiFi firmware contain multiple vulnerabilities.

Description

CWE-320: Key Management Errors - CVE-2014-8243

An remote, unauthenticated attacker can read the router's .htpassword file by requesting http(s)://<router_ip>/.htpasswd. The .htpasswd file contains the MD5 hash of the administrator password.

CWE-200: Information Exposure - CVE-2014-8244

A remote, unauthenticated attacker can issue various JNAP calls by sending specially-crafted HTTP POST requests to http(s)://<router_ip>/JNAP/. Depending on the JNAP action that is called, the attacker may be able to read or modify sensitive information on the router.

It should also be noted that the router exposes multiple ports to the WAN by default. Port 10080 and 52000 both expose the administrative web interface to WAN users. Depending on the model, additional ports may be exposed by default as well.

Impact

A remote, unauthenticated attacker may be able to read or modify sensitive information on the router.

Solution

Apply an Update:

If possible, users are encouraged to update their firmware to the latest version to remediate these vulnerabilities. Linksys has provided the following fix versions:

EA2700 - Ver.1.1.40 (Build 162751)

EA3500 - Ver.1.1.40 (Build 162464)

E4200v2 - Ver.2.1.41 (Build 162351)

EA4500 - Ver.2.1.41 (Build 162351)

EA6200 - Ver.1.1.41 (Build 162599)

EA6300 - Ver.1.1.40 (Build 160989)

EA6400 - Ver.1.1.40 (Build 160989)

EA6500 - Ver.1.1.40 (Build 160989)

EA6700 - Ver.1.1.40 (Build 160989)

EA6900 - Ver.1.1.42 (Build 161129)

Vendor Information

447516
Expand all

Linksys

Notified:  July 28, 2014 Updated:  October 23, 2014

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

There are no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
Temporal 5.3 E:POC/RL:OF/RC:C
Environmental 5.3 CDP:ND/TD:H/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Kyle Lovett and Sijmen Ruwhof for discovering these vulnerabilities.

This document was written by Todd Lewellen.

Other Information

CVE IDs: CVE-2014-8243, CVE-2014-8244
Date Public: 2014-10-31
Date First Published: 2014-10-31
Date Last Updated: 2014-11-07 19:15 UTC
Document Revision: 38

Sponsored by the Department of Homeland Security Office of Cybersecurity and Communications.