Vulnerability Note VU#922681
Portable SDK for UPnP Devices (libupnp) contains multiple buffer overflows in SSDP
The Portable SDK for UPnP Devices libupnp library contains multiple buffer overflow vulnerabilities. Devices that use libupnp may also accept UPnP queries over the WAN interface, therefore exposing the vulnerabilities to the internet.
Universal Plug and Play (UPnP) is a set of network protocols designed to support automatic discovery and service configuration. The Portable SDK for UPnP Devices (libupnp) is an open source project that has its roots in the Linux SDK for UPnP Devices and software from Intel (Intel Tools for UPnP Technologies and later Developer Tools for UPnP Technologies). Intel no longer maintains or supports these tools. Many different vendors produce UPnP-enabled devices that use libupnp.
As part of a large scale security research project, Rapid7 investigated internet-connected UPnP devices and found, among other security issues, multiple buffer overflow vulnerabilities in the libupnp implementation of the Simple Service Discovery Protocol (SSDP). Rapid7's report summarizes these vulnerabilities:
The libupnp library is vulnerable to multiple stack-based buffer overflows when handling malicious SSDP requests. This library is used by tens of millions of deployed network devices, of which approximately twenty million are exposed directly to the internet. In addition to network devices, many streaming media and file sharing applications are also exposed to attack through this library.
This advisory does not address historic or current vulnerabilities in the HTTP and SOAP processing code of libupnp.
Versions 1.2 (Intel SDK) and 1.2.1a - 1.8.0 (Portable SDK) are affected by at least three remotely exploitable buffer overflows in the unique_service_name() function, which is called to process incoming SSDP requests on UDP port 1900. Additionally, versions prior to 1.6.17 are vulnerable to additional issues in the same function. Please see Appendix A for a review of the vulnerable code by version.
Hundreds of vendors have used the libupnp library in their products, many of which are acting as the home routers for consumer networks. Any application linking to libupnp is likely to be affected and a list of confirmed vendors and products is provided in Appendix B.
A remote, unauthenticated attacker may be able to execute arbitrary code on the device or cause a denial of service.
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Vendor Information (Learn More)
We attempted to notify more than 200 vendors identified by Rapid7 as running libupnp. The following list includes vendors who responded to our notification and vendors for whom we had existing security contact information.
|Vendor||Status||Date Notified||Date Updated|
|Axis||Affected||13 Dec 2012||05 Apr 2013|
|Cisco Systems, Inc.||Affected||13 Dec 2012||29 Jan 2013|
|D-Link Systems, Inc.||Affected||13 Dec 2012||31 Jan 2013|
|Fujitsu Technology||Affected||10 Jan 2013||29 Jan 2013|
|Huawei Technologies||Affected||13 Dec 2012||29 Jan 2013|
|ipitomy||Affected||08 Jan 2013||01 Feb 2013|
|Linksys||Affected||13 Dec 2012||29 Jan 2013|
|NEC Corporation||Affected||13 Dec 2012||29 Jan 2013|
|Siemens||Affected||13 Dec 2012||30 Jan 2013|
|Sony Corporation||Affected||13 Dec 2012||30 Jan 2013|
|Synology||Affected||13 Dec 2012||28 Feb 2013|
|teldat||Not Affected||-||05 Feb 2013|
|Ubiquiti Networks||Not Affected||09 Jan 2013||29 Jan 2013|
|Yamaha Corporation||Not Affected||-||01 Feb 2013|
|3com Inc||Unknown||13 Dec 2012||29 Jan 2013|
CVSS Metrics (Learn More)
Thanks to HD Moore of Rapid7 for reporting this vulnerability, and Tod Beardsley for coordination support.
This document was written by Jared Allar.
- CVE IDs: CVE-2012-5958 CVE-2012-5959 CVE-2012-5960 CVE-2012-5961 CVE-2012-5962 CVE-2012-5963 CVE-2012-5964 CVE-2012-5965
- Date Public: 29 Jan 2013
- Date First Published: 29 Jan 2013
- Date Last Updated: 05 Apr 2013
- Document Revision: 66
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