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Red Hat Shores Up Its Defenses
Red Hat Shores Up Its Defenses

Red Hat has moved up several security enhancements that weren’t supposed to appear until early next year ostensibly to tout the value of having a Red Hat subscription.

 

The widgetry, packaged as the Red Hat Enterprise Linux 3 Update 3 and meant to cut the chances of a hacker triggering the execution of compromising code, is only accessible through the subscription-serving Red Hat Network.

 

Red Hat Enterprise Linux 3, based on the old 2.4 kernel and some of the stabler pieces of the 2.6 Linux kernel, was released last fall. Red Hat isn’t supposed to go over to the 2.6 kernel completely until next year.

 

Update 3 includes Exec-shield and PIE (Position Independent Executable) features that protect against stack, buffer or function pointer overflows, and other types of security exploits that rely on overwriting data structures in memory.

 

It also includes NX (No Execute) support that’s been extended from the Itanium 2 to include Intel x86 and EM64T and AMD64 chips. NX technology restricts the execution of program code in specific areas of memory such as the stack or heap to ward off many common buffer overflow security vulnerabilities.

 

Update 3 supports IBM Power 5 servers.
About Maureen O'Gara
Maureen O'Gara the most read technology reporter for the past 20 years, is the Cloud Computing and Virtualization News Desk editor of SYS-CON Media. She is the publisher of famous "Billygrams" and the editor-in-chief of "Client/Server News" for more than a decade. One of the most respected technology reporters in the business, Maureen can be reached by email at maureen(at)sys-con.com or paperboy(at)g2news.com, and by phone at 516 759-7025. Twitter: @MaureenOGara

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