Firefox 4 get first Security Update (WebGLES, ASLR)

Custom Search

Hack in The Box
TechAirlines
Wallpapers
Computer Forensics Boot Camp
Electricity Prices
Texas Electricity
Electricity Rates in Texas
Electric Companies in Texas
Experts Galaxy
NewsApp Portal

[Welcome to SCforum.info - Security [CENTRAL] Forum]

Welcome to SCforum.info - Security [CENTRAL] Forum, a home of the SCF Community devoted to provide Computer related News, Alerts, Downloads and FREE Help in such a way that even the novice computer user can understand.

Getting started using our community is extremely easy, check the two steps below:

Step 1: Create an account by clicking here and wait for approval from Administrator. It's completely free with no hidden strings attached.

Step 2: If you have a computer problem and need some help, or just want to take part in opened discussions, simply browse Forum. Once you *Register an account, you can quickly post your questions and comments.

(*Registered Members get: free support, also, they can communicate privately with other members via PM, removal of this message, see fewer ads and much more...)

[Samker]

Mozilla has issued the first ever security update for Firefox 4.0, including a fix for two chunks of code that allowed attackers to override a key security protection baked in to recent versions of the Windows operating system.

The slip up in the two WebGLES graphics libraries, which Mozilla added to the latest version of the open-source browser, is the result of someone compiling the code without the benefit of ASLR, or address space layout randomization. The security measure, which Microsoft introduced in Windows Vista, is designed to prevent malware attacks by making it harder to locate the memory addresses of code loaded by memory-corruption exploits.

Because the library was added to Firefox 4, the bug doesn't affect earlier versions of the browser.

“Nils reported that the WebGLES libraries in the Windows version of Firefox were compiled without ASLR protection,” an advisory for the bug stated. “An attacker who found an exploitable memory corruption flaw could then use these libraries to bypass ASLR on Windows Vista and Windows 7, making the flaw as exploitable on those platforms as it would be on Windows XP or other platforms”: https://www.mozilla.org/security/announce/2011/mfsa2011-17.html

Nils, it would appear, is the hacker who took home prizes two years in a row at the annual Pwn2Own hacker competition by defeating ASLR and a similar Windows protection known as data execution prevention. He doesn't give his last name to reporters.

Firefox 4.0.1 included fixes for other bugs, including one in the XSLT generate-id() function heap and another for Miscellaneous memory safety hazards: https://www.mozilla.org/security/known-vulnerabilities/firefox40.html

Mozilla also pushed out Firefox 3.6.17, which fixed vulnerabilities in that version of the browser: https://www.mozilla.org/security/known-vulnerabilities/firefox36.html
Three of them – for bugs involving an escalation of privilege through the Java Embedding Plugin, multiple dangling pointers, and miscellaneous memory safety hazards – were rated critical.

(ElReg)