http://bugzilla.opensuse.org/show_bug.cgi?id=1196430 Bug ID: 1196430 Summary: VUL-0: CVE-2022-21656: envoy-proxy: X.509 subjectAltName matching (and nameConstraints) bypass Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.3 Hardware: Other URL: https://smash.suse.de/issue/324527/ OS: Other Status: NEW Severity: Major Priority: P5 - None Component: Security Assignee: dmueller@suse.com Reporter: carlos.lopez@suse.com QA Contact: security-team@suse.de Found By: Security Response Team Blocker: --- rh#2057271 Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a "type confusion" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted. References: https://bugzilla.redhat.com/show_bug.cgi?id=2057271 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-21656 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21656 https://github.com/envoyproxy/envoy/commit/bb95af848c939cfe5b5ee33c5b1770558... https://github.com/envoyproxy/envoy/security/advisories/GHSA-c9g7-xwcv-pjx2 http://www.cvedetails.com/cve/CVE-2022-21656/ -- You are receiving this mail because: You are on the CC list for the bug.