Java / XML
Explain about XEE/XXE XML security Attacks.
XML Entity Expansion (XEE) also known as XML Expansion/XML Bomb, is an attack that consumes unsuspected vast memory resources. Usually attacker leverages a feature of XML whereby entity references can reference another entity.
In DTD/XML External Entity (XXE) attacks, the victim is made to disclose sensitive/privileged information through weaknesses in the XML parser and the ability of the attacker to modify XML used by the service.
Mitigation strategies:
- Don't use DTDs: Disable DTDS in your parser.
- XML Schema validation: XML comes packed with schemal validation. For easy validation, you can pass the XML data file and the XML schema definition file to the validating XML parser.
- Whitelist definitions: Filter and allow only certain definitions, and block everything that doesn't fit your syntax or regular expression match.
- Blacklist: Block known bad patterns.
Dogecoin! Earn free bitcoins up to $250 now by signing up.
Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: Signup now and earn!
Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.
Join CoinBase! We'll both receive $10 in free Bitcoin when they buy or sell their first $100 on Coinbase! Available in India also.
Use the referral Join coinbase!
Invest now!!! Get Free equity stock (US, UK only)!
Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.
The Robinhood app makes it easy to trade stocks, crypto and more.
Webull! Receive free stock by signing up using the link: Webull signup.
More Related questions...
