Authentication Bypass by Spoofing Affecting github.com/kubernetes/kubernetes/pkg/serviceaccount package, versions <1.30.0-beta.0
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.06% (27th
percentile)
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMKUBERNETESKUBERNETESPKGSERVICEACCOUNT-7216072
- published 6 Jun 2024
- disclosed 5 Jun 2024
- credit Unknown
Introduced: 5 Jun 2024
New CVE-2024-5037 Open this link in a new tabHow to fix?
Upgrade github.com/kubernetes/kubernetes/pkg/serviceaccount to version 1.30.0-beta.0 or higher.
Overview
Affected versions of this package are vulnerable to Authentication Bypass by Spoofing due to a flaw in the JWT authentication mechanism. An attacker can bypass the issue ("iss") check and gain unauthorized access by using a forged token. If two servers use the same pair of keys, the attacker can use the token from the first server to deceive the second server, and cause the privilege escape.
PoC
{
"fakeiss":".eyJpc3MiOiJhY2NvdW50cy5nb29nbGUuY29tIn0.",
"protected":"",
"header":"",
"payload":"",
"signature":""
}
CVSS Scores
version 3.1