Bug 2072188 (CVE-2022-3248)

Summary: CVE-2022-3248 kubernetes: OpenShift API admission checks does not enforce "custom-host" permissions
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Nobody <nobody>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: bcoca, bdettelb, bmontgom, caswilli, cmeyers, crarobin, davidn, dfreiber, dhalasz, epacific, fjansen, gblomqui, gparvin, jburrell, jcammara, jhardy, jkoehler, jmadigan, jmitchel, jneedle, jobarker, joelsmith, jokerman, jtanner, jwong, kaycoth, kshier, mabashia, maszulik, ngough, njean, notting, nstielau, osapryki, owatkins, pahickey, pamccart, relrod, rfreiman, rogbas, rpetrell, sdoran, security-response-team, simaishi, smcdonal, sponnaga, stcannon, sthirugn, teagle, tkuratom, vkrizan, vkumar, vmugicag, xxia, yguenane, zsadeh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in OpenShift API, as admission checks do not enforce "custom-host" permissions. This issue could allow an attacker to violate the boundaries, as permissions will not be applied.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2101532, 2101753, 2101531, 2112757, 2112758    
Bug Blocks: 2075610, 2128432    

Description Pedro Sampaio 2022-04-05 18:35:01 UTC 
The ability to specify a custom host name is governed by the "custom-host" permission, which is granted by default to all project administrators[1]. *It is possible for the cluster administrator to revoke this permission*. Then, the OpenShift API admission checks *should* prohibit project administrators from setting a custom host name on ingress and route objects. The problem is that *the admission checks do not enforce this prohibition* for ingress objects under some circumstances.