I am working on an app which takes XML file as input and then processes it. We found out that the app is vulnerable to XXE DoS attack, namely famous Billion Laughs case. Before the file is processed, it is validated against schema. So, my question is, will the DoS attack take place during the validation? Or during the validation the XML entities are not expanded and hence the DoS attack will happen only after validation, when validated file is parsed?
XML External Entity Vulnerability DoS case: when the expansion happens?
136 views Asked by Russell'sTeapot At
1
There are 1 answers
Related Questions in XML
- Borrow mutable and immutable reference in the same block
- Linking to a static lib compiled with MSVC
- Using a no-method trait implementation in a different module
- No error for two traits implementing the same method
- How are the generic functions and types stored in an rlib?
- Is it possible to find an element in a Vec<T> and remove it?
- What does & actually do?
- unresolved name rand::thread_rng
- Use of undeclared type that is defined in another file
- Creating byte buffers in rust
Related Questions in VALIDATION
- Borrow mutable and immutable reference in the same block
- Linking to a static lib compiled with MSVC
- Using a no-method trait implementation in a different module
- No error for two traits implementing the same method
- How are the generic functions and types stored in an rlib?
- Is it possible to find an element in a Vec<T> and remove it?
- What does & actually do?
- unresolved name rand::thread_rng
- Use of undeclared type that is defined in another file
- Creating byte buffers in rust
Related Questions in BATCH-FILE
- Borrow mutable and immutable reference in the same block
- Linking to a static lib compiled with MSVC
- Using a no-method trait implementation in a different module
- No error for two traits implementing the same method
- How are the generic functions and types stored in an rlib?
- Is it possible to find an element in a Vec<T> and remove it?
- What does & actually do?
- unresolved name rand::thread_rng
- Use of undeclared type that is defined in another file
- Creating byte buffers in rust
Related Questions in DENIAL-OF-SERVICE
- Borrow mutable and immutable reference in the same block
- Linking to a static lib compiled with MSVC
- Using a no-method trait implementation in a different module
- No error for two traits implementing the same method
- How are the generic functions and types stored in an rlib?
- Is it possible to find an element in a Vec<T> and remove it?
- What does & actually do?
- unresolved name rand::thread_rng
- Use of undeclared type that is defined in another file
- Creating byte buffers in rust
Related Questions in XXE
- Borrow mutable and immutable reference in the same block
- Linking to a static lib compiled with MSVC
- Using a no-method trait implementation in a different module
- No error for two traits implementing the same method
- How are the generic functions and types stored in an rlib?
- Is it possible to find an element in a Vec<T> and remove it?
- What does & actually do?
- unresolved name rand::thread_rng
- Use of undeclared type that is defined in another file
- Creating byte buffers in rust
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Basically, a parser MUST expand entities to validate a document (see 4.4.3 in XML recommendation), since your entities may include some markup, and build up a valid document.
So yes, the problem may occur during validation of the XML file.