Feeds

Mac OS X haunted by ghost of Jailbreakme bug

Browse-and-get-pwned vuln gathers cobwebs

5 things you didn’t know about cloud backup

Older versions of Mac OS X are susceptible to a variation of the critical Jailbreakme vulnerability, which left Macs and Apple iDevices wide open to malware attacks, a security firm has warned.

According to Core Security, Apple has known about the bug in OS 10.5, aka Leopard, for two and a half months, but still hasn't fixed it. Members of the Boston-based company said they alerted Apple on August 26, and agreed to keep it private until a patch was issued. After Apple failed twice to meet patch deadlines, Core issued an advisory on Monday warning of the threat in the older OS, which unlike the more recent Snow Leopard, runs on Macs with PowerPC processors.

“According to information provided to us by Apple, a patch for this fix has already been developed,” the advisory stated. “Apple provided us a release date for this patch in two opportunities but then failed to meet their our [sic] deadlines without giving us any notice or explanation.”

The security input validation flaw resides in Leopard's Compact Font Format engine, which is used to render fonts. It can be exploited using a variety of methods, including by tricking a user to open a booby-trapped PDF file with the Mac's Preview document reader. The memory corruption exploit is triggered by manipulating the offset value of the CharStrings INDEX structure, Core said.

The code-execution bug is a variation of one that hackers from Jailbreakme.com used to jailbreak the iPhone 4. It didn't take long for security experts to realize the hole could also be used for malicious purposes. Apple killed the bug in iOS on August 11 and in OS X on August 26.

The same day the Mac update was released, Core alerted Apple that a variation, which has been dubbed CVE 2010-1797, afflicted Leopard. According to a detailed timeline included with Core's advisory, members of Core and Apple have been communicating back and forth about a release ever since. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
One HUNDRED FAMOUS LADIES exposed NUDE online
Celebrity women victimised as Apple iCloud accounts reportedly popped
Rubbish WPS config sees WiFi router keys popped in seconds
Another day, another way in to your home router
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
Attack flogged through shiny-clicky social media buttons
66,000 users popped by malicious Flash fudging add-on
New Snowden leak: How NSA shared 850-billion-plus metadata records
'Federated search' spaffed info all over Five Eyes chums
Three quarters of South Korea popped in online gaming raids
Records used to plunder game items, sold off to low lifes
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
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.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.