Feeds

Spam-squirting hole found in McAfee antivirus kit

Ironic server-side flaw exploited, patch promised

Build a business case: developing custom apps

McAfee is promising to patch a vulnerability in its hosted anti-malware service after it found a flaw that allowed systems where the product was installed to be turned into potential spam-relay nodes.

SaaS for Total Protection, the vulnerable software, will be patched on "January 18 or 19, as soon as we have finished testing", McAfee promised in a blog post published on Wednesday.

Two security issues in SaaS for Total Protection product have cropped up over recent days. The first security scare involves the possibility that an attacker might misuse an ActiveX control to execute code. The second abuses McAfee's "rumor" (update) technology to turn machines running the SaaS for Total Protection client into spam-spewing open relays.

The spam-relay problem resulted in genuine inconvenience for some McAfee customers, whose email was blocked after their IP addresses appeared on blacklists, prompting complaints to McAfee's forums and blog posts on the issue (here and here).

McAfee said the first bug is already blocked by a patch it released to address a similar problem last August. However the second spam-relaying bug still needs some attention, hence the plan to release a server-side patch this week. Since SaaS for Total Protection is a managed product, customers will not be obliged to update their software themselves.

In its blog post, the security giant said that neither of the two security issues placed customer data at any risk of exposure. Its notice explains the impact of the spam-relay flaw, which has been actively abused by spammers.

"The second issue has been used to allow spammers to bounce off of affected machines, resulting in an increase of outgoing email from them," it said. "Although this issue can allow the relaying of spam, it does not give access to the data on an affected machine. The forthcoming patch will close this relay capability."

McAfee says both the issues are restricted to SaaS for Total Protection and don't affect any of its other products.

Old-school scammers used to search the net for open relays through which they might be able to send junk mail before the botnets became the preferred technique for sending junk mail around 10 years ago. Using zombie drones to spew spam is so much easier for crooks, because of the large number of tools that have been developed to automate the process. These tools allow junk mail to be sent out in burst through different machines, rather than the same open relay, a tactic that runs circles around less sophisticated spam-filtering techniques.

Perhaps recent botnet takedowns have prompted spammers to return to older techniques but our guess is that the McAfee spam relay flaw is something of a one-off, opportunistically seized upon and exploited by a small number of spammers. ®

Endpoint data privacy in the cloud is easier than you think

More from The Register

next story
14 antivirus apps found to have security problems
Vendors just don't care, says researcher, after finding basic boo-boos in security software
'Things' on the Internet-of-things have 25 vulnerabilities apiece
Leaking sprinklers, overheated thermostats and picked locks all online
iWallet: No BONKING PLEASE, we're Apple
BLE-ding iPhones, not NFC bonkers, will drive trend - marketeers
Multipath TCP speeds up the internet so much that security breaks
Black Hat research says proposed protocol will bork network probes, flummox firewalls
Only '3% of web servers in top corps' fully fixed after Heartbleed snafu
Just slapping a patched OpenSSL on a machine ain't going to cut it, we're told
Microsoft's Euro cloud darkens: US FEDS can dig into foreign servers
They're not emails, they're business records, says court
Plug and PREY: Hackers reprogram USB drives to silently infect PCs
BadUSB instructs gadget chips to inject key-presses, redirect net traffic and more
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
prev story

Whitepapers

7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Solving today's distributed Big Data backup challenges
Enable IT efficiency and allow a firm to access and reuse corporate information for competitive advantage, ultimately changing business outcomes.
A new approach to endpoint data protection
What is the best way to ensure comprehensive visibility, management, and control of information on both company-owned and employee-owned devices?