Attacks/Breaches
1/7/2014
07:19 AM
Tim Wilson
Tim Wilson
Quick Hits
50%
50%

Researcher Uncovers Backdoor In DSL Routers

Flaw in DSL routers could give attackers full, unauthenticated administrative access, researcher says

A researcher has discovered what he describes as a "backdoor" in DSL routers that could enable attackers to gain administrative access.

In a post on the GitHub site, researcher Eloi Vanderbeken offers a proof of concept showing how he was able to crack his own Linksys DSL router and gain administrative access to a home network without authentication. Subsequent posts indicate that the proof of concept would also work on routers made by other vendors.

The backdoor was found through scans of a little-known port, 32764/TCP, which is now being scanned more broadly, according to the Internet Storm Center (ISC).

"We do see a lot of probes for port 32764/TCP," says ISC's Johannes Ullrich in an online post. "At this point, I urge everybody to scan their networks for devices listening on port 32764/TCP. If you use a Linksys router, try to scan its public IP address from outside your network.

"Our data shows almost no scans to the port prior to today, but a large number from 3 source IPs [on Jan. 2]," ISC's post says.

Have a comment on this story? Please click "Add a Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message. Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Dark Reading Tech Digest, Dec. 19, 2014
Software-defined networking can be a net plus for security. The key: Work with the network team to implement gradually, test as you go, and take the opportunity to overhaul your security strategy.
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-9676
Published: 2015-02-27
The seg_write_packet function in libavformat/segment.c in ffmpeg 2.1.4 and earlier does not free the correct memory location, which allows remote attackers to cause a denial of service ("invalid memory handler") and possibly execute arbitrary code via a crafted video that triggers a use after free.

CVE-2014-9682
Published: 2015-02-27
The dns-sync module before 0.1.1 for node.js allows context-dependent attackers to execute arbitrary commands via shell metacharacters in the first argument to the resolve API function.

CVE-2015-0655
Published: 2015-02-27
Cross-site scripting (XSS) vulnerability in Unified Web Interaction Manager in Cisco Unified Web and E-Mail Interaction Manager allows remote attackers to inject arbitrary web script or HTML via vectors related to a POST request, aka Bug ID CSCus74184.

CVE-2015-0884
Published: 2015-02-27
Unquoted Windows search path vulnerability in Toshiba Bluetooth Stack for Windows before 9.10.32(T) and Service Station before 2.2.14 allows local users to gain privileges via a Trojan horse application with a name composed of an initial substring of a path that contains a space character.

CVE-2015-0885
Published: 2015-02-27
checkpw 1.02 and earlier allows remote attackers to cause a denial of service (infinite loop) via a -- (dash dash) in a username.

Dark Reading Radio
Archived Dark Reading Radio
How can security professionals better engage with their peers, both in person and online? In this Dark Reading Radio show, we will talk to leaders at some of the security industry’s professional organizations about how security pros can get more involved – with their colleagues in the same industry, with their peers in other industries, and with the IT security community as a whole.