Improper Certificate Validation The advisory has been revoked - it doesn't affect any version of package github.com/elastic/fleet-server/v7 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMELASTICFLEETSERVERV7-6055620
- published15 Nov 2023
- disclosed26 Oct 2023
- creditUnknown
Introduced: 26 Oct 2023
CVE-2023-31421 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Amendment
This was deemed not a vulnerability.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation when acting as TLS client due to missing verification if the server certificate is valid for the target IP address. An attacker can exploit this to establish a connection with an invalid server certificate by presenting a certificate that passes signature validation but fails IP SAN values validation.
Note:
This is only exploitable if the client is configured to connect to an IP address instead of a hostname.