{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2023-6200", "ASSIGNER": "secalert@redhat.com", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "A race condition was found in the Linux Kernel. Under certain conditions, an unauthenticated attacker from an adjacent network could send an ICMPv6 router advertisement packet, causing arbitrary code execution." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "cweId": "CWE-362" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "n/a", "product": { "product_data": [ { "product_name": "kernel", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "6.7-rc7", "status": "unaffected" } ] } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] } }, { "vendor_name": "Red Hat", "product": { "product_data": [ { "product_name": "Red Hat Enterprise Linux 6", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 7", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 8", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Enterprise Linux 9", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } }, { "product_name": "Red Hat Virtualization 4", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "unaffected" } } ] } } ] } }, { "vendor_name": "Fedora", "product": { "product_data": [ { "product_name": "Fedora", "version": { "version_data": [ { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://access.redhat.com/security/cve/CVE-2023-6200", "refsource": "MISC", "name": "https://access.redhat.com/security/cve/CVE-2023-6200" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2250377", "refsource": "MISC", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2250377" }, { "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dade3f6a1e4e", "refsource": "MISC", "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dade3f6a1e4e" } ] }, "work_around": [ { "lang": "en", "value": "The remote attack is potentially possible in the local network only. It is not possible if param\nnet.ipv6.conf.[NIC].accept_ra\ndisabled. Check this param value with the command\ncat /proc/sys/net/ipv6/conf/default/accept_ra\nor /proc/sys/net/ipv6/conf/eth0/accept_ra\n(where eth0 is the name of the networking interface).\nIf you cannot run this or a similar command and parameter accept_ra is not available, then IPV6 is disabled.\nIf IPV6 is not being used, it is possible to disable it completely, and there is instruction on how to do this:\nhttps://access.redhat.com/solutions/8709" } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Lucas Leong (Trend Micro Zero Day Initiative) for reporting this issue." } ], "impact": { "cvss": [ { "attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } ] } }