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Threatpost | The first stop for security news

Technology recruitment site GeekedIn has scraped 8 million GitHub profiles and left the information exposed in an unsecured MongoDB database. The backup of the database was downloaded by at least one third party, and it’s likely being traded online.

GitHub profiles scraped

Troy Hunt, the security researcher who runs the Have I been Pwned? service and whose own information is in the compromised backup file, received the file, and ultimately notified GitHub of the matter.

His analysis of the file ultimately revealed that:

  • It contains 8.2 million unique email addresses, i.e. records about 8.2 million users of GitHub, Bitbucket (another web-based hosting service for projects), and possibly other online services.
  • Most of these records contain users’ names, usernames, email address, geographic location, professional skills, years of professional experience.
  • All of this information is already online on GitHub and those other services, accessible to anybody – GeekedIn just scraped it and created its own database, access to which is offered to companies interested in finding developers – for a fee.

When contacted, GitHub said that they allow third parties scraping of their users’ data, so long as it’s only used for the same purpose for which they gave that information to GitHub.

“Using scraped information for a commercial purpose violates our privacy statement and we do not condone this kind of use,” they told Hunt.

After he finally managed to get in touch with GeekedIn, they acknowledged the incidente and promised to secure the data.

Hunt made some of this data searchable in raw format through his service, but only a little over 1 million users will be able to find it. He only included the data of those who had a publicly available email address on GitHub.

“This incident is not about any sort of security vulnerability on GitHub’s behalf, rather it relates to a trove of data from their site which was inappropriately scraped and then inadvertently exposed due to a vulnerability in another service,” he made sure to note.

Help Net Security

Vulnerabilities, Backdoor Found in D-Link DWR-932B LTE Router

Security researchers have discovered numerous unpatched security vulnerabilities in the D-Link DWR-932B LTE router / access point, including backdoor accounts and default Wi-Fi Protected Setup (WPS) PIN.

The device is being sold in various countries and appears to be customers’ security nightmare because of the numerous security weaknesses. The vulnerabilities were discovered by Pierre Kim, who decided to reveal only the most significant of them, and who says that the issues affect even the latest firmware version released by the vendor.

Earlier this year, Kim disclosed numerous unpatched vulnerabilities affecting the LTE QDH routers made by Quanta, including backdoors, hardcoded PIN, flaws in the web interface, remote code execution issue, and other bugs. The flaws that impact D-Link’s router are similar to those found in Quanta’s device, it seems.

The researcher discovered two backdoor accounts on the device and says that they can be used to bypass the HTTP authentication used to manage the router. There is an “admin” account with password “admin,” as well as a “root” account, with password “1234.” By default, telnetd and SSHd are running on D-Link DWR-932B, yet the latter isn’t documented, the researcher also explains.

Next, there is a backdoor inside the /bin/appmgr program, which allows an attacker to send a specific string in UDP to the router to start an authentication-less telnet server (if a telnetd daemon is not already running). The issue is that the router listens to (UDP) for commands and that it allows access without authentication as root if “HELODBG” is received as command.

D-Link DWR-932B also comes with 28296607 as the default WPS PIN, and has it hardcoded in the /bin/appmgr program. The HostAP configuration contains the PIN as well, and so do the HTTP APIs. What’s more, although the router allows the user to generate a temp PIN for the WPS system, the PIN is weak and uses an algorithm leveraging srand(time(0)) as seed. An attacker knowing the current date as time(0) can generate valid WPS PIN suites and brute-force them, the researcher explains.

Kim also reveals that the file /etc/inadyn-mt.conf contains a user and a hardcoded password, and that the HTTP daemon /bin/qmiweb contains multiple vulnerabilities as well. The router also executes strange, purposeless shell commands as root.

Furthermore, the router supports remote FOTA (Firmware Over The Air) and contains the credentials to contact the server hardcoded in the /sbin/fotad binary, as base64-strings. The researcher discovered that, although the FOTA daemon tries to retrieve the firmware over HTTPS, the SSL certificate has been invalid for one year and a half.

The researcher also reveals that the security level of the UPNP program (miniupnp) in the router is lowered, which allows an attacker located in the LAN area to add Port forwarding from the Internet to other clients located in the LAN. “There is no restriction about the UPnP permission rules in the configuration file, contrary to common usage in UPnP where it is advised to only allow redirection of port above 1024,” Kim notes.

Because of this lack of permission rules, an attacker can forward everything from the WAN into the LAN, the researcher says. This means that they can set rules to allow traffic from the Internet to local Exchange servers, mail servers, FTP servers, HTTP servers, database servers, and the like.

An attacker can overwrite the router’s firmware with a custom firmware if they wanted to, “but with all these vulnerabilities present in the default firmware, I don't think it is worth making the effort,” Kim says. He also notes that, because the device has a sizable memory (168 MB), a decent CPU, and good free space (235 MB), along with complete toolkits installed by default, users should consider trashing it, “because it's trivial for an attacker to use this router as an attack vector.”

D-Link was informed on these issues in June, but the company failed to resolve them until now. Because 90 days have passed since the vulnerabilities were disclosed to the vendor, Kim decided to publish an advisory to reveal these bugs.

This is not the first time D-Link products have made it to the headline due to security vulnerabilities. The company patched a critical flaw in several DIR model routers in August, after a popular D-Link Wi-Fi camera was found in June to be affected by a serious flaw that was subsequently discovered in over 120 D-Link products.

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Ionut Arghire is an international correspondent for SecurityWeek.

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Cisco has released software updates for its WebEx Meetings Server product to address a couple of critical and high severity vulnerabilities that can be exploited remotely for arbitrary command execution and denial-of-service (DoS) attacks.

The critical flaw, tracked as CVE-2016-1482, is caused by insufficient sanitization of user-supplied data. An attacker can exploit it to execute arbitrary commands with elevated privileges by injecting the commands into existing application scripts running on a targeted device located in a DMZ (demilitarized) zone.

The high severity issue, identified as CVE-2016-1483, allows an unauthenticated attacker to cause a targeted device to enter a DoS condition by repeatedly attempting to access a specific service.

Both vulnerabilities affect WebEx Meetings Server version 2.6 and they have been addressed with the release of version 2.7. Cisco says it’s unaware of any instances where these flaws have been exploited for malicious purposes.

This is the second time Cisco updates its WebEx products in recent weeks to address serious vulnerabilities. The company recently patched critical and medium severity flaws in the WebEx Meetings Player.

Earlier this month, Cisco informed customers that a high severity vulnerability in its ACE30 Application Control Engine module and ACE 4700 series Application Control Engine appliances can be exploited for DoS attacks.

The company updated its initial advisory on Thursday to say that the issue will be resolved with the release of version A5(3.5), which is only expected to become available by November 30. What makes this vulnerability interesting is the fact that while it hasn’t been exploited for malicious purposes, it was triggered in some cases by a research project that scans the Internet for SSL/TLS servers.

Related: Cisco Updates ASA Software to Address NSA-Linked Exploit

Related: Cisco Patches Critical Flaws in Firepower Management Center

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