GHSA-f2rj-m42r-6jm2
Skipper vulnerable to SSRF via X-Skipper-Proxy
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/zalando/skipper | < 0.13.237 | 0.13.237 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
Skipper prior to version v0.13.236 is vulnerable to server-side request forgery (SSRF). An attacker can exploit a vulnerable version of proxy to access the internal metadata server or other unauthenticated URLs by adding an specific header (X-Skipper-Proxy) to the http request.
### Patches
The problem was patched in version https://github.com/zalando/skipper/releases/tag/v0.13.237.
Users need to upgrade to skipper `>=v0.13.237`.
### Workarounds
Use `dropRequestHeader("X-Skipper-Proxy")` filter
### References
https://github.com/zalando/skipper/releases/tag/v0.13.237
### For more information
If you have any questions or comments about this advisory:
* Open an issue in https://github.com/zalando/skipper/issues/new/choose
* Chat with us in slack: https://app.slack.com/client/T029RQSE6/C82Q5JNH5
References
External links from the advisory. They lead to third-party sites.
- https://github.com/zalando/skipper/security/advisories/GHSA-f2rj-m42r-6jm2
- https://nvd.nist.gov/vuln/detail/CVE-2022-38580
- https://github.com/zalando/skipper/pull/2058
- https://github.com/zalando/skipper/commit/842634347da8fe77e396f66edea79d329fd72130
- https://gist.github.com/Fadavvi/9fffcfa4aaa9e25b77cfe7b3044b2857#file-cve-2022-38580
- https://github.com/zalando/skipper
- https://github.com/zalando/skipper/releases/tag/v0.13.237
- https://pastebin.com/dXxpgPAK
- https://pkg.go.dev/vuln/GO-2022-1086
- http://packetstormsecurity.com/files/171546/X-Skipper-Proxy-0.13.237-Server-Side-Request-Forgery.html
- http://skipper.com
- http://zalando.com