Library susceptible to billion laugh style attacks
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- Dominant language
- Rust
- Stars
- 4.1k
- Forks
- 348
- Avg merge
- 1d 14h
- Merged PRs (30d)
- 3
Description
When I try to open a malicious SVG that is created using nested references it hangs the application.
The sample test case is at https://unshorn.github.io/foo.svg
Other samples are:
https://unshorn.github.io/nested-pattern-crash.svg
https://unshorn.github.io/deep.svg
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the hang with foo.svg, nested-pattern-crash.svg, and deep.svg from the issue. Trace the nested-reference handling and verify that these malicious SVGs no longer hang the renderer while normal SVG rendering remains functional.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- security
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100