Linksys client-supplied XML data could be used to gain administrative access
| linksys-xml-admin-access (10651) |  High Risk |
Description:
Linksys EtherFast BEFSR41, BEFSR11, BEFSRU31, BEFW11S4, BEFVP41, BEFSX41, BEFSR81, BEFN2PS4, and HPRO200 routers could allow a remote attacker to gain unauthorized administrative access to the device without supplying a password. If the Web management interface has been enabled, a remote attacker could connect to the device on port 8080 and supply malicious XML data to cause the management setup screen to display. An attacker could use this vulnerability to view and modify sensitive router configuration information.
Platforms Affected:
- Linksys, BEFSR11 1.41
- Linksys, BEFSR11 1.42.3
- Linksys, BEFSR11 1.42.7
- Linksys, BEFSR11 1.43
- Linksys, BEFSR41 1.41
- Linksys, BEFSR41 1.42.3
- Linksys, BEFSR41 1.42.7
- Linksys, BEFSR41 1.43
- Linksys, BEFSRU31 1.41
- Linksys, BEFSRU31 1.42.3
- Linksys, BEFSRU31 1.42.7
- Linksys, BEFSRU31 1.43
- Linksys, BEFW11S4 1.4.2.7
- Linksys, BEFW11S4 1.4.3
Remedy:
Upgrade to the latest firmware version (1.43.3 or later), available from the Linksys Support Web page. See References.
Consequences:
Bypass Security
References:
- BugTraq Mailing List, 2002-11-18 22:00:14, Linksys router vulnerability at http://marc.theaimsgroup.com/?l=bugtraq&m=103767638823941&w=2.
- BugTraq Mailing List, Mon Dec 02 2002 - 19:49:03 CST , CORE-20021005: Vulnerability Report For Linksys Devices at http://archives.neohapsis.com/archives/bugtraq/2002-12/0022.html.
- BugTraq Mailing List, Wed Nov 20 2002 - 14:37:48 CST, UPDATE: Linksys router vulnerability (add'l models affected) at http://archives.neohapsis.com/archives/bugtraq/2002-11/0292.html.
- Core Security Technologies Advisory CORE-20021005, Vulnerability Report For Linksys Devices at http://www.corest.com/common/showdoc.php?idx=263&idxseccion=10.
- Linksys Support Web site, Linksys: Firmware Upgrades at http://www.linksys.com/download/firmware.asp?fwid=1.
- BID-6201: Linksys Router Unauthorized Management Access Vulnerability
Reported:
Nov 18, 2002
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