Bug 1217111 (CVE-2023-42815)

Summary: VUL-0: CVE-2023-42815: kyverno: Denial of service from malicious image manifest
Product: [openSUSE] openSUSE Distribution Reporter: SMASH SMASH <smash_bz>
Component: SecurityAssignee: Security Team bot <security-team>
Status: RESOLVED UPSTREAM QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P5 - None CC: gabriele.sonnu
Version: Leap 15.6   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/384762/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-42815:3.1:(AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2023-11-14 08:15:22 UTC 
A security vulnerability was found in Kyverno where an attacker could cause denial of service of Kyverno. The vulnerability was in Kyvernos Notary verifier. An attacker would need control over the registry from which Kyverno would fetch signatures. With such a position, the attacker could return a malicious response to Kyverno, when Kyverno would send a request to the registry. The malicious response would cause denial of service of Kyverno, such that other users' admission requests would be blocked from being processed.

This is a vulnerability in a new component released in v1.11.0. The only users affected by this are those that have been building Kyverno from source at the main branch which is not encouraged. Users consuming official Kyverno releases are not affected. There are no known cases of this vulnerability being exploited in the wild.

The vulnerability was found during an ongoing security audit of Kyverno conducted by Ada Logics, facilitated by OSTIF and funded by the CNCF.

References:
https://github.com/kyverno/kyverno/security/advisories/GHSA-hjpv-68f4-2262
Comment 1 Gabriele Sonnu 2023-11-14 08:16:17 UTC 
Only affects unreleased kyverno version (v1.11.0+). We ship v1.10.5 in openSUSE:Factory, closing.