Skipper vulnerable to SSRF via X-Skipper-Proxy
GHSA-f2rj-m42r-6jm2 · CVE-2022-38580 · GO-2022-1086
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Description
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
- WEB https://github.com/zalando/skipper/security/advisories/GHSA-f2rj-m42r-6jm2
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-38580
- WEB https://github.com/zalando/skipper/pull/2058
- WEB https://github.com/zalando/skipper/commit/842634347da8fe77e396f66edea79d329fd72130
- WEB https://gist.github.com/Fadavvi/9fffcfa4aaa9e25b77cfe7b3044b2857#file-cve-2022-38580
- PACKAGE https://github.com/zalando/skipper
- WEB https://github.com/zalando/skipper/releases/tag/v0.13.237
- WEB https://pastebin.com/dXxpgPAK
- WEB https://pkg.go.dev/vuln/GO-2022-1086
- WEB http://packetstormsecurity.com/files/171546/X-Skipper-Proxy-0.13.237-Server-Side-Request-Forgery.html
- WEB http://skipper.com
- WEB http://zalando.com
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