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Enable RELRO

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#1,600 4 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
build-system, security

Research direction

Start by locating the native shared-object build and linker configuration in the JNA repository, since no file or entry point is named in the issue. Verify how linker flags are supplied, enable the requested full RELRO options there, and confirm the resulting shared object has both RELRO and immediate symbol binding enabled.

Written by the indexing model from the issue text.

Description

This shared object does not have RELRO enabled.The entire GOT(.got and .got.plt both)are writable. Without this compiler flag, bugger overflows on a global variable can overwrite GOT entries. Use the option -z,relro,-z,now to enable full RELRO and only -z,relro to enable partial RELRO.

Dominant language
Java
Stars
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Forks
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No merged PRs in 30d

Getting set up

This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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