Sep 30 2014

Apple Releases OS X bash Update 1.0

Original release date: September 30, 2014

Apple has released OS X bash Update 1.0 to address vulnerabilities found in the Bourne-again Shell (bash) which could allow a remote attacker to execute arbitrary shell commands.

US-CERT recommends users and administrators review Apple Security Update HT6495, TA14-268A, Vulnerability Note VU#252743 and the Redhat Security Article for additional details.


This product is provided subject to this Notification and this Privacy & Use policy.


Sep 30 2014

Advertising firms struggle to kill malvertisements

In late September, advertisements appearing on a host of popular news and entertainment sites began serving up malicious code, infecting some visitors' computers with a backdoor program designed to gather information on their systems and install additional malicious code.

The attack affected visitors to The Jerusalem Post, The Times of Israel, The Hindustan Times, Internet music service Last.fm, and India-focused movie portal Bollywood Hungama, among other popular sites. At the center of the malware campaign: the compromise of San Francisco-based Internet advertising network Zedo, an advertising provider for the sites, whose network was then used to distribute malicious ads.

For ten days, the company investigated multiple malware reports, retracing the attacker's digital footsteps to identify the malicious files and shut the backdoor to its systems.

Read 16 remaining paragraphs | Comments

Sep 30 2014

Shellshock fixes beget another round of patches as attacks mount

Over the past few days, Apple, Red Hat, and others have pushed out patches to vulnerabilities in the GNU Bourne Again Shell (bash). The vulnerabilities previously allowed attackers to execute commands remotely on systems that use the command parser under some conditions—including Web servers that use certain configurations of Apache. However, some of the patches made changes that broke from the functionality of the GNU bash code, so now debate continues about how to “un-fork” the patches and better secure bash.

At the same time, the urgency of applying those patches has mounted as more attacks that exploit the weaknesses in bash’s security (dubbed “Shellshock”) have appeared. In addition to the threat first spotted the day after the vulnerability was made public, a number of new attacks have emerged. While some appear to simply be vulnerability scans, there are also new exploit attempts that carry malware or attempt to give the attacker direct remote control of the targeted system.

Stormy weather

On Monday, the SANS Technology Institute’s Internet Storm Center (ISC) elevated its INFOcon threat level—a measure of the danger level of current Internet “worms” and other threats based on Internet traffic—to Yellow. This level indicates an attack that poses a minor threat to the Internet’s infrastructure as a whole with potential significant impact on some systems. Johannes Ullrich, Dean of Research at SANS, noted that six exploits based on Shellshock have been recorded by the ISC’s servers and “honeypot” systems. (A honeypot is a virtual or physical computer system set up to entice attackers and record their actions.)

Read 7 remaining paragraphs | Comments

Sep 30 2014

Apple Releases Patches for Shellshock Bug

Apple has released updates to insulate Mac OS X systems from the dangerous “Shellshock” bug, a pervasive vulnerability that is already being exploited in active attacks.

osxPatches are available via Software Update, or from the following links for OS X Mavericks, Mountain Lion, and Lion.

After installing the updates, Mac users can check to see whether the flaw has been truly fixed by taking the following steps:

* Open Terminal, which you can find in the Applications folder (under the Utilities subfolder on Mavericks) or via Spotlight search.

* Execute this command:
bash –version [author's note: my WordPress install is combining these two dashes; it should read the word "bash" followed by a space, then two dashes, and the word "version"].

* The version after applying this update will be:

OS X Mavericks:  GNU bash, version 3.2.53(1)-release (x86_64-apple-darwin13)
OS X Mountain Lion:  GNU bash, version 3.2.53(1)-release (x86_64-apple-darwin12)
OS X Lion:  GNU bash, version 3.2.53(1)-release (x86_64-apple-darwin11)