{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2023-20236", "ASSIGNER": "psirt@cisco.com", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device.\r\n\r This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the affected device." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Improper Verification of Cryptographic Signature", "cweId": "CWE-347" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Cisco", "product": { "product_data": [ { "product_name": "Cisco IOS XR Software", "version": { "version_data": [ { "version_affected": "=", "version_value": "5.2.0" }, { "version_affected": "=", "version_value": "5.2.1" }, { "version_affected": "=", "version_value": "5.2.2" }, { "version_affected": "=", "version_value": "5.2.4" }, { "version_affected": "=", "version_value": "5.2.3" }, { "version_affected": "=", "version_value": "5.2.5" }, { "version_affected": "=", "version_value": "5.2.47" }, { "version_affected": "=", "version_value": "5.3.0" }, { "version_affected": "=", "version_value": "5.3.1" }, { "version_affected": "=", "version_value": "5.3.2" }, { "version_affected": "=", "version_value": "5.3.3" }, { "version_affected": "=", "version_value": "5.3.4" }, { "version_affected": "=", "version_value": "6.0.0" }, { "version_affected": "=", "version_value": "6.0.1" }, { "version_affected": "=", "version_value": "6.0.2" }, { "version_affected": "=", "version_value": "6.1.1" }, { "version_affected": "=", "version_value": "6.1.2" }, { "version_affected": "=", "version_value": "6.1.3" }, { "version_affected": "=", "version_value": "6.1.4" }, { "version_affected": "=", "version_value": "6.1.12" }, { "version_affected": "=", "version_value": "6.1.22" }, { "version_affected": "=", "version_value": "6.1.32" }, { "version_affected": "=", "version_value": "6.1.36" }, { "version_affected": "=", "version_value": "6.1.42" }, { "version_affected": "=", "version_value": "6.2.1" }, { "version_affected": "=", "version_value": "6.2.2" }, { "version_affected": "=", "version_value": "6.2.3" }, { "version_affected": "=", "version_value": "6.2.25" }, { "version_affected": "=", "version_value": "6.2.11" }, { "version_affected": "=", "version_value": "6.3.2" }, { "version_affected": "=", "version_value": "6.3.3" }, { "version_affected": "=", "version_value": "6.3.15" }, { "version_affected": "=", "version_value": "6.4.1" }, { "version_affected": "=", "version_value": "6.4.2" }, { "version_affected": "=", "version_value": "6.4.3" }, { "version_affected": "=", "version_value": "6.5.1" }, { "version_affected": "=", "version_value": "6.5.2" }, { "version_affected": "=", "version_value": "6.5.3" }, { "version_affected": "=", "version_value": "6.5.25" }, { "version_affected": "=", "version_value": "6.5.26" }, { "version_affected": "=", "version_value": "6.5.28" }, { "version_affected": "=", "version_value": "6.5.29" }, { "version_affected": "=", "version_value": "6.5.32" }, { "version_affected": "=", "version_value": "6.5.33" }, { "version_affected": "=", "version_value": "6.6.2" }, { "version_affected": "=", "version_value": "6.6.3" }, { "version_affected": "=", "version_value": "6.6.25" }, { "version_affected": "=", "version_value": "6.6.4" }, { "version_affected": "=", "version_value": "7.0.1" }, { "version_affected": "=", "version_value": "7.0.2" }, { "version_affected": "=", "version_value": "7.0.12" }, { "version_affected": "=", "version_value": "7.0.14" }, { "version_affected": "=", "version_value": "7.1.1" }, { "version_affected": "=", "version_value": "7.1.15" }, { "version_affected": "=", "version_value": "7.1.2" }, { "version_affected": "=", "version_value": "7.1.3" }, { "version_affected": "=", "version_value": "6.7.1" }, { "version_affected": "=", "version_value": "6.7.2" }, { "version_affected": "=", "version_value": "6.7.3" }, { "version_affected": "=", "version_value": "6.7.4" }, { "version_affected": "=", "version_value": "7.2.0" }, { "version_affected": "=", "version_value": "7.2.1" }, { "version_affected": "=", "version_value": "7.2.2" }, { "version_affected": "=", "version_value": "7.3.1" }, { "version_affected": "=", "version_value": "7.3.15" }, { "version_affected": "=", "version_value": "7.3.2" }, { "version_affected": "=", "version_value": "7.3.3" }, { "version_affected": "=", "version_value": "7.3.5" }, { "version_affected": "=", "version_value": "7.4.1" }, { "version_affected": "=", "version_value": "7.4.2" }, { "version_affected": "=", "version_value": "6.8.1" }, { "version_affected": "=", "version_value": "6.8.2" }, { "version_affected": "=", "version_value": "7.5.1" }, { "version_affected": "=", "version_value": "7.5.3" }, { "version_affected": "=", "version_value": "7.5.2" }, { "version_affected": "=", "version_value": "7.5.4" }, { "version_affected": "=", "version_value": "7.6.1" }, { "version_affected": "=", "version_value": "7.6.2" }, { "version_affected": "=", "version_value": "7.7.1" }, { "version_affected": "=", "version_value": "7.7.2" }, { "version_affected": "=", "version_value": "7.7.21" }, { "version_affected": "=", "version_value": "6.9.1" }, { "version_affected": "=", "version_value": "6.9.2" }, { "version_affected": "=", "version_value": "7.8.1" }, { "version_affected": "=", "version_value": "7.8.2" }, { "version_affected": "=", "version_value": "7.9.1" }, { "version_affected": "=", "version_value": "7.9.2" } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB", "refsource": "MISC", "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB" } ] }, "source": { "advisory": "cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB", "discovery": "INTERNAL", "defects": [ "CSCvz63925", "CSCvz63918", "CSCwe12502", "CSCvz63929", "CSCwi31568", "CSCwh78724", "CSCwi26526", "CSCwh70601", "CSCwh78727", "CSCwj83430", "CSCwj88475" ] }, "exploit": [ { "lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory." } ], "impact": { "cvss": [ { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 6.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH" } ] } }