Risk
8/5/2013
10:40 AM
50%
50%

Tor Anonymity Cracked; FBI Porn Investigation Role Questioned

Some security experts ask whether an FBI sting operation exploited a vulnerability in Firefox to disable the anonymity offered by the Tor network.

Who's now at risk from the Firefox flaw exploited by the injection script? In fact, the vulnerability was patched on June 25, 2013, with the release of Firefox 22 and Firefox Extended Service Release (ESR) -- which is often used by enterprises -- version 17.0.7.

"People who are on the latest supported versions of Firefox are not at risk," wrote Daniel Veditz, Mozilla's security lead, in a Sunday blog post. "Although the vulnerability affects users of Firefox 21 and below, the exploit targets only ESR-17 users. Since this attack was found on Tor hidden services, presumably that is because the Tor Browser Bundle (TBB) is based on Firefox ESR-17. Users running the most recent TBB have all the fixes that were applied to Firefox ESR 17.0.7 and were also not at risk from this attack."

Anyone still using a vulnerable version of the TBB can mitigate the vulnerability by deactivating JavaScript in their Firefox browser. "We're investigating these bugs and will fix them if we can," said Tor's Phobos.

Responding to criticism that a zero-day vulnerability in Firefox had been used to compromise Tor users, Mozilla's Veditz countered that the bug had already been publicly disclosed and fixed. "This wasn't a 'zero day' attack, it was an exploit based on a security advisory from six weeks ago," he said. "The number of users vulnerable to this -- those who aren't up to date -- is dropping fast so the exploit is losing most of its value anyway."

The timing of the apparent Freedom Hosting takedown and bust of Marques -- which happened the same week as the annual Black Hat and DEF CON conventions -- didn't go unnoticed by the hacking community. "FBI uploads malicious code on the deep websites while everyone is off at DEF CON. Talk about playing dirty," posted "VarthDator" on a related Reddit thread.

Marques, meanwhile, remains incarcerated in Ireland, following his request for bail having been denied, after a judge classified him as a flight risk. That was based on testimony that Marques had routed large amounts of money from his bank accounts to accounts based in Romania. Authorities also said that based on a digital forensic examination of Marques' computer, he'd been researching how to obtain a visa for Russia. Marques countered in court that he'd only been researching the issue out of curiosity, in response to news about NSA whistleblower Edward Snowden.

Previous
2 of 2
Next
Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
MohitK590
50%
50%
MohitK590,
User Rank: Apprentice
8/5/2013 | 5:14:15 PM
re: Tor Anonymity Cracked; FBI Porn Investigation Role Questioned
According to 'The Hacker News' , the IP address mentioned in the Firefox exploit belongs to NSA's contractor and they used it to hack TOR network to uncloak anonymous users including hackers, protesters | More details : http://thehackernews.com/2013/...
Mathew
50%
50%
Mathew,
User Rank: Apprentice
8/6/2013 | 7:26:23 AM
re: Tor Anonymity Cracked; FBI Porn Investigation Role Questioned
Thanks for the comment. The assertion that the IP address traces directly to the NSA has been refuted by Wired. In a nutshell, the IP address has been misread, although it does trace to an upstream Verizon provider that serves a number of government agencies (including the public-facing NSA.gov site) as well as government contractors.

Also, The TOR Project announced Monday that anyone who's installed the latest Tor Browser Bundle -- released June 26, 2013 -- is protected against the Firefox exploit. Note that TBB doesn't (yet) auto-update.
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Five Emerging Security Threats - And What You Can Learn From Them
At Black Hat USA, researchers unveiled some nasty vulnerabilities. Is your organization ready?
Flash Poll
Dark Reading Strategic Security Report: The Impact of Enterprise Data Breaches
Dark Reading Strategic Security Report: The Impact of Enterprise Data Breaches
Social engineering, ransomware, and other sophisticated exploits are leading to new IT security compromises every day. Dark Reading's 2016 Strategic Security Survey polled 300 IT and security professionals to get information on breach incidents, the fallout they caused, and how recent events are shaping preparations for inevitable attacks in the coming year. Download this report to get a look at data from the survey and to find out what a breach might mean for your organization.
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-7445
Published: 2015-10-15
The Direct Rendering Manager (DRM) subsystem in the Linux kernel through 4.x mishandles requests for Graphics Execution Manager (GEM) objects, which allows context-dependent attackers to cause a denial of service (memory consumption) via an application that processes graphics data, as demonstrated b...

CVE-2015-4948
Published: 2015-10-15
netstat in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x, when a fibre channel adapter is used, allows local users to gain privileges via unspecified vectors.

CVE-2015-5660
Published: 2015-10-15
Cross-site request forgery (CSRF) vulnerability in eXtplorer before 2.1.8 allows remote attackers to hijack the authentication of arbitrary users for requests that execute PHP code.

CVE-2015-6003
Published: 2015-10-15
Directory traversal vulnerability in QNAP QTS before 4.1.4 build 0910 and 4.2.x before 4.2.0 RC2 build 0910, when AFP is enabled, allows remote attackers to read or write to arbitrary files by leveraging access to an OS X (1) user or (2) guest account.

CVE-2015-6333
Published: 2015-10-15
Cisco Application Policy Infrastructure Controller (APIC) 1.1j allows local users to gain privileges via vectors involving addition of an SSH key, aka Bug ID CSCuw46076.

Dark Reading Radio
Archived Dark Reading Radio
Security researchers are finding that there's a growing market for the vulnerabilities they discover and persistent conundrum as to the right way to disclose them. Dark Reading editors will speak to experts -- Veracode CTO and co-founder Chris Wysopal and HackerOne co-founder and CTO Alex Rice -- about bug bounties and the expanding market for zero-day security vulnerabilities.