CVE-2022-38580: Github.com/zalando/skipper Skipper Vulnerable To SSRF Vulnerability
CRITICALCVE-2022-38580 is a CRITICAL (CVSS 9.8) skipper vulnerable to ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Github.com/zalando/skipper libraries in the Go ecosystem. The issue involves skipper vulnerable to ssrf via x-skipper-proxy. Remediation is available by upgrading affected packages to version 0.13.237.
CVE-2022-38580 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2022-38580
To remediate this vulnerability, upgrade all affected Github.com/zalando/skipper dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/zalando/skipper to 0.13.237Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/zalando/skipperHow to Check if You Are Affected
To determine whether your application is affected by CVE-2022-38580, inspect your project dependencies for Github.com/zalando/skipper:
inspect dependencies for github.com/zalando/skipperAnalyze the terminal output to locate any version of Github.com/zalando/skipper in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.237), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Github.com/zalando/skipper, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2022-38580 Affected Github.com/zalando/skipper Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/zalando/skipper
|
Go |
< 0.13.237
|
0.13.237
|
References
Frequently Asked Questions
What is CVE-2022-38580?
Which Github.com/zalando/skipper versions are affected?
What version fixes CVE-2022-38580?
Is github.com/zalando/skipper affected?
What is the CVSS score of CVE-2022-38580?
What CWE is associated with CVE-2022-38580?
How can I check Go dependencies for CVE-2022-38580?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-f2rj-m42r-6jm2",
"modified" : "2023-08-30T09:52:10Z",
"published" : "2022-10-25T20:22:29Z",
"aliases" : [ "CVE-2022-38580" ],
"summary" : "Skipper vulnerable to SSRF via X-Skipper-Proxy",
"details" : "### Impact\n\nSkipper 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.\n\n### Patches\nThe problem was patched in version https://github.com/zalando/skipper/releases/tag/v0.13.237.\nUsers need to upgrade to skipper `>=v0.13.237`.\n\n### Workarounds\n\nUse `dropRequestHeader(\"X-Skipper-Proxy\")` filter\n\n### References\n\nhttps://github.com/zalando/skipper/releases/tag/v0.13.237\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n* Open an issue in https://github.com/zalando/skipper/issues/new/choose\n* Chat with us in slack: https://app.slack.com/client/T029RQSE6/C82Q5JNH5",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/zalando/skipper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.13.237"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/zalando/skipper/security/advisories/GHSA-f2rj-m42r-6jm2"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-38580"
}, {
"type" : "WEB",
"url" : "https://github.com/zalando/skipper/pull/2058"
}, {
"type" : "WEB",
"url" : "https://github.com/zalando/skipper/commit/842634347da8fe77e396f66edea79d329fd72130"
}, {
"type" : "WEB",
"url" : "https://gist.github.com/Fadavvi/9fffcfa4aaa9e25b77cfe7b3044b2857#file-cve-2022-38580"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/zalando/skipper"
}, {
"type" : "WEB",
"url" : "https://github.com/zalando/skipper/releases/tag/v0.13.237"
}, {
"type" : "WEB",
"url" : "https://pastebin.com/dXxpgPAK"
}, {
"type" : "WEB",
"url" : "https://pkg.go.dev/vuln/GO-2022-1086"
}, {
"type" : "WEB",
"url" : "http://packetstormsecurity.com/files/171546/X-Skipper-Proxy-0.13.237-Server-Side-Request-Forgery.html"
}, {
"type" : "WEB",
"url" : "http://skipper.com"
}, {
"type" : "WEB",
"url" : "http://zalando.com"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-918" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2022-10-25T20:22:29Z",
"nvd_published_at" : "2022-10-25T17:15:00Z"
}
}