CVE-2022-38580: SSRF
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
Other sources
Zalando Skipper v0.13.236 is vulnerable to Server-Side Request Forgery (SSRF).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
go/github.com/zalando/skipperto a version that resolves this vulnerability.Fixed in 0.13.237 - Upgrade
Upgrade
zalando/skipperto a version that resolves this vulnerability.Fixed in v0.13.237 - Configuration
Configure Skipper to drop/remove the request header by using the `dropRequestHeader("X-Skipper-Proxy")` filter to mitigate the SSRF vector.
Zalando Skipper dropRequestHeader("X-Skipper-Proxy") filter = Enable dropRequestHeader("X-Skipper-Proxy")
Event History
Frequently Asked Questions
What is the severity of CVE-2022-38580?
CVE-2022-38580 is classified as a high severity vulnerability due to its potential for server-side request forgery (SSRF) exploitation.
How do I fix CVE-2022-38580?
To mitigate CVE-2022-38580, upgrade Zalando Skipper to version 0.13.237 or later.
What types of systems are affected by CVE-2022-38580?
CVE-2022-38580 affects all versions of Zalando Skipper prior to version 0.13.237.
What is the main risk associated with CVE-2022-38580?
The main risk associated with CVE-2022-38580 is that attackers can leverage it to gain unauthorized access to internal metadata servers and other protected resources.
Can CVE-2022-38580 impact cloud services?
Yes, CVE-2022-38580 can impact cloud services if the Skipper proxy is used to manage internal network traffic, allowing potential exploitation.