Feeds

XSS bug crawls all over PayPal page

'Fugitif' strikes again

Securing Web Applications Made Simple and Scalable

Online payments site PayPal has been bitten by yet another cross-site scripting (XSS) bug that could be exploited by black hats to phish user passwords or possibly steal authentication cookies.

At time of writing, opening the link revealed a tainted page that opened a javascript window that read: "Fugitif was here another time." It worked flawlessly on Internet Explorer and Firefox. Using the excellent Firefox NoScript plug-in automatically blocks the page from loading, however.

screenshot of PayPal XSS page

XSS bugs remain one of the easier ways to subvert website security measures. They use manipulated URLs to inject unauthorized code or content into a trusted website to change its behavior. XSS exploits are able to bypass the so-called same-origin policy, which prevents cookies and other types of content set by one domain from being access or manipulated by a different address.

PayPal squashed the bug late Monday evening, several hours after this article was originally published. "As you know, PayPal's highest priority is the security of its payment service," a spokesman said. He said the company encourages people to responsibly disclose bugs. Guidelines are here. ®

The smart choice: opportunity from uncertainty

More from The Register

next story
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
Four fake Google haxbots hit YOUR WEBSITE every day
Goog the perfect ruse to slip into SEO orfice
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
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.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.