Attacks/Breaches
1/6/2014
01:25 PM
Connect Directly
RSS
E-Mail
50%
50%
Repost This

Yahoo Ads Hack Spreads Malware

Millions of users exposed to drive-by malware attacks that targeted Java bugs to install six types of malicious code

Yahoo.com visitors received an unexpected surprise beginning on New Year's Eve: advertisements that targeted their systems with malware.

The malicious advertising campaign was first spotted on Friday by Dutch information security consulting firm Fox-IT, which immediately warned Yahoo. Fox-IT said in a blog post that the attack advertisements -- which were being served by ads.yahoo.com -- used iFrames to hide malicious scripts. If a user clicked on the advertisement, they were redirected to a site that hosted the "Magnitude" exploit kit, which then attempted to exploit any Java vulnerabilities present on their system to install malware.

"The attackers are clearly financially motivated and seem to offer services to other actors," said Fox-IT, noting that the exploit kit behind the attacks dropped six different types of malware, including the Zeus banking Trojan, Dorkbot, and a click-fraud Trojan. The greatest number of users targeted by the malicious advertisements were in Romania (24%), the United Kingdom (23%), and France (20%), according to Fox-IT.

Read the full article here.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
ciphercodes
50%
50%
ciphercodes,
User Rank: Apprentice
1/8/2014 | 5:54:36 PM
re: Yahoo Ads Hack Spreads Malware
Websites should implement stricter rules and verifications before allowing random and newly registered ad networks to server ads on their sites. NBC, OOKLA and now YAHOO.
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2011-0460
Published: 2014-04-16
The init script in kbd, possibly 1.14.1 and earlier, allows local users to overwrite arbitrary files via a symlink attack on /dev/shm/defkeymap.map.

CVE-2011-0993
Published: 2014-04-16
SUSE Lifecycle Management Server before 1.1 uses world readable postgres credentials, which allows local users to obtain sensitive information via unspecified vectors.

CVE-2011-3180
Published: 2014-04-16
kiwi before 4.98.08, as used in SUSE Studio Onsite 1.2 before 1.2.1 and SUSE Studio Extension for System z 1.2 before 1.2.1, allows attackers to execute arbitrary commands via shell metacharacters in the path of an overlay file, related to chown.

CVE-2011-4089
Published: 2014-04-16
The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.

CVE-2011-4192
Published: 2014-04-16
kiwi before 4.85.1, as used in SUSE Studio Onsite 1.2 before 1.2.1 and SUSE Studio Extension for System z 1.2 before 1.2.1, allows attackers to execute arbitrary commands as demonstrated by "double quotes in kiwi_oemtitle of .profile."

Best of the Web