Bug 2012036 (CVE-2021-25742) - CVE-2021-25742 k8s.io/ingress-nginx: Custom snippets allows retrieval of ingress-nginx serviceaccount token and secrets across all namespaces
Summary: CVE-2021-25742 k8s.io/ingress-nginx: Custom snippets allows retrieval of ingr...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-25742
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Whiteboard:
Depends On:
Blocks: 2012037
TreeView+ depends on / blocked
 
Reported: 2021-10-08 04:30 UTC by Sam Fowler
Modified: 2023-02-27 13:38 UTC (History)
19 users (show)

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Last Closed: 2021-10-21 20:08:12 UTC
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Description Sam Fowler 2021-10-08 04:30:39 UTC 
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster.
Comment 2 Sam Fowler 2021-10-08 04:39:30 UTC 
Upstream fix:

https://github.com/kubernetes/ingress-nginx/pull/7665

Also requires setting allow-snippet-annotations to false in the ingress-nginx ConfigMap.
Comment 3 Product Security DevOps Team 2021-10-21 20:08:12 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-25742
Comment 4 Sam Fowler 2021-11-04 20:59:28 UTC 
Upstream issue:

https://github.com/kubernetes/ingress-nginx/issues/7837
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