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{"acknowledgement": "Red Hat would like to thank Daniel Stenberg and Hiroki Kurosawa for reporting this issue.", "affected_release": [{"advisory": "RHSA-2023:4629", "cpe": "cpe:/a:redhat:jboss_core_services:1::el8", "package": "jbcs-httpd24-curl-0:8.2.1-1.el8jbcs", "product_name": "JBoss Core Services for RHEL 8", "release_date": "2023-08-15T00:00:00Z"}, {"advisory": "RHSA-2023:4629", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-curl-0:8.2.1-1.el7jbcs", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2023-08-15T00:00:00Z"}, {"advisory": "RHSA-2023:4523", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "curl-0:7.61.1-30.el8_8.3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-08-08T00:00:00Z"}, {"advisory": "RHSA-2023:6292", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "curl-0:7.61.1-22.el8_6.9", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-11-02T00:00:00Z"}, {"advisory": "RHSA-2023:4354", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "curl-0:7.76.1-23.el9_2.2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4354", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "curl-0:7.76.1-23.el9_2.2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:5598", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "curl-0:7.76.1-14.el9_0.7", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:4628", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "curl", "product_name": "Red Hat JBoss Core Services 1", "release_date": "2023-08-15T00:00:00Z"}], "bugzilla": {"description": "curl: IDN wildcard match may lead to Improper Cerificate Validation", "id": "2196786", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2196786"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-295", "details": ["An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as \"Subject Alternative Name\" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with `xn--` and should not be allowed to pattern match, but the wildcard check in curl could still check for `x*`, which would match even though the IDN name most likely contained nothing even resembling an `x`.", "A flaw was found in the Curl package. An incorrect International Domain Name (IDN) wildcard match may lead to improper certificate validation."], "name": "CVE-2023-28321", "package_state": [{"cpe": "cpe:/a:redhat:rhel_dotnet:3.1", "fix_state": "Out of support scope", "package_name": "rh-dotnet31-curl", "product_name": ".NET Core 3.1 on Red Hat Enterprise Linux"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "curl", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2023-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-28321\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-28321\nhttps://curl.se/docs/CVE-2023-28321.html"], "threat_severity": "Moderate", "upstream_fix": "curl 8.1.0"}