GHSA-f2rj-m42r-6jm2

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GHSA-f2rj-m42r-6jm2

Summary: Skipper vulnerable to SSRF via X-Skipper-Proxy

Details: ### 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: 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