Feeds

PHP devs lob second patch at super-critical CGI bug

If at first you don't succeed, compile, compile again

Beginner's guide to SSL certificates

The developers of PHP have released updates to thwart fresh attacks against systems that use the scripting language to dynamically generate web pages.

All users are encouraged to upgrade to PHP 5.4.3 or PHP 5.3.13, as appropriate, after a serious security bug in PHP-CGI-based setups was disclosed. Developers attempted to fix this long-standing, but only recently discovered, flaw in a new version on 3 May, before deciding the fix was incomplete and releasing a new set of patches on Tuesday, 8 May.

This is just as well because the PHP-CGI vulnerability has become the target of a series of attacks against sites hosted by DreamHost and others over recent days. Attempts to exploit the bug were witnessed by net honeypots maintained by security researchers at TrustWave SpiderLabs. The assaults were ultimately designed to plant backdoors on vulnerable web servers, as an advisory by TrustWave explains.

The PHP-CGI remote code execution bug was discovered by security researchers, who traced the flaw to changes introduced in the codebase way back in 2004. The Eindbazen crew told PHP developers about the bug, and work was going on behind the scenes to develop a fix. However the wheels fell off this project after discussions surrounding the security hole were accidentally made public, exposing the existence of the flaw to world+dog before a patch was ready.

This, in turn, prompted the decision to rush out updates that failed to close the hole before this week's release of a second set of security updates.

PHP 5.4.3 also addresses a buffer overflow vulnerability in the apache_request_headers, as explained in an advisory here. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
SMASH the Bash bug! Apple and Red Hat scramble for patch batches
'Applying multiple security updates is extremely difficult'
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
Hackers thrash Bash Shellshock bug: World races to cover hole
Update your gear now to avoid early attacks hitting the web
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Researchers tell black hats: 'YOU'RE SOOO PREDICTABLE'
Want to register that domain? We're way ahead of you.
Stunned by Shellshock Bash bug? Patch all you can – or be punished
UK data watchdog rolls up its sleeves, polishes truncheon
Ello? ello? ello?: Facebook challenger in DDoS KNOCKOUT
Gets back up again after half an hour though
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.