{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2023-22915", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "assignerShortName": "Zyxel", "dateUpdated": "2023-04-24T00:00:00", "dateReserved": "2023-01-10T00:00:00", "datePublished": "2023-04-24T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2023-04-24T00:00:00"}, "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability in the \u201cfbwifi_forward.cgi\u201d CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device."}], "affected": [{"vendor": "Zyxel", "product": "USG FLEX series firmware", "versions": [{"version": "4.50 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "USG FLEX 50(W) firmware", "versions": [{"version": "4.30 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "USG20(W)-VPN firmware", "versions": [{"version": "4.30 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "VPN series firmware", "versions": [{"version": "4.30 through 5.35", "status": "affected"}]}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "cweId": "CWE-120"}]}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFE84F5F-0D2D-4B13-8B11-061D6AF36E0D", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*", "matchCriteriaId": "2B30A4C0-9928-46AD-9210-C25656FB43FB", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "E0248888-B2CD-4CAA-8475-B9CD68CDA4C1", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*", "matchCriteriaId": "D74ABA7E-AA78-4A13-A64E-C44021591B42", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "BB46C274-12D1-4155-AB7B-6FE9282FD307", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*", "matchCriteriaId": "F93B6A06-2951-46D2-A7E1-103D7318D612", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "513FCF86-307E-4230-9A59-653BE2450525", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*", "matchCriteriaId": "646C1F07-B553-47B0-953B-DC7DE7FD0F8B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "44C99310-56C3-4392-8D68-8290A209B2DA", "versionEndIncluding": "5.35", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*", "matchCriteriaId": "110A1CA4-0170-4834-8281-0A3E14FC5584", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3C7F5651-F9E1-4F7C-84BD-AF06ADDCBF82", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*", "matchCriteriaId": "92C697A5-D1D3-4FF0-9C43-D27B18181958", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3473C5D7-91AC-4FCA-851D-D6583B42F768", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*", "matchCriteriaId": "9D1396E3-731B-4D05-A3F8-F3ABB80D5C29", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3E3AC1DD-9BD8-42AD-A443-BCCBA6A4F27B", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*", "matchCriteriaId": "81D90A7B-174F-40A1-8AF4-08B15B7BAC40", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "06C109E1-5D08-41E7-BDB2-8D53CA87FCA8", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*", "matchCriteriaId": "EECD311A-4E96-4576-AADF-47291EDE3559", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "16394FD3-8C28-4AD8-AE57-4C61D5E69D3E", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*", "matchCriteriaId": "3C45C303-1A95-4245-B242-3AB9B9106CD4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD0F0319-5402-4E2D-8E79-8C492422438D", "versionEndIncluding": "5.35", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*", "matchCriteriaId": "9E3AC823-0ECA-42D8-8312-2FBE5914E4C0", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3C160661-113D-4B5A-A253-FEB1E4CBB267", "versionEndIncluding": "5.35", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*", "matchCriteriaId": "6BEA412F-3DA1-4E91-9C74-0666147DABCE", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability in the \u201cfbwifi_forward.cgi\u201d CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device."}], "id": "CVE-2023-22915", "lastModified": "2023-05-04T14:44:10.363", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security@zyxel.com.tw", "type": "Secondary"}]}, "published": "2023-04-24T17:15:09.690", "references": [{"source": "security@zyxel.com.tw", "tags": ["Vendor Advisory"], "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-120"}], "source": "security@zyxel.com.tw", "type": "Secondary"}]}

{}