{"api_version":"1","generated_at":"2026-05-06T06:06:08+00:00","cve":"CVE-2018-5241","urls":{"html":"https://cve.report/CVE-2018-5241","api":"https://cve.report/api/cve/CVE-2018-5241.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2018-5241","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-5241"},"summary":{"title":"CVE-2018-5241","description":"Symantec Advanced Secure Gateway (ASG) 6.6 and 6.7, and ProxySG 6.5, 6.6, and 6.7 are susceptible to a SAML authentication bypass vulnerability. The products can be configured with a SAML authentication realm to authenticate network users in intercepted proxy traffic. When parsing SAML responses, ASG and ProxySG incorrectly handle XML nodes with comments. A remote attacker can modify a valid SAML response without invalidating its cryptographic signature. This may allow the attacker to bypass user authentication security controls in ASG and ProxySG. This vulnerability only affects authentication of network users in intercepted traffic. It does not affect administrator user authentication for the ASG and ProxySG management consoles.","state":"PUBLIC","assigner":"secure@symantec.com","published_at":"2018-05-29 13:29:00","updated_at":"2021-07-08 16:37:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"http://www.securitytracker.com/id/1040993","name":"1040993","refsource":"SECTRACK","tags":["Third Party Advisory","VDB Entry"],"title":"Blue Coat ProxySG Lets Remote Users Bypass SAML Authentication on the Target System - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/104282","name":"104282","refsource":"BID","tags":["Third Party Advisory","VDB Entry"],"title":"Symantec Advanced Secure Gateway and ProxySG CVE-2018-5241 Authentication Bypass 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The products can be configured with a SAML authentication realm to authenticate network users in intercepted proxy traffic. When parsing SAML responses, ASG and ProxySG incorrectly handle XML nodes with comments. A remote attacker can modify a valid SAML response without invalidating its cryptographic signature. This may allow the attacker to bypass user authentication security controls in ASG and ProxySG. This vulnerability only affects authentication of network users in intercepted traffic. It does not affect administrator user authentication for the ASG and ProxySG management consoles."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Authentication bypass"}]}]},"references":{"reference_data":[{"name":"https://www.symantec.com/security-center/network-protection-security-advisories/SA167","refsource":"CONFIRM","url":"https://www.symantec.com/security-center/network-protection-security-advisories/SA167"},{"name":"1040993","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1040993"},{"name":"104282","refsource":"BID","url":"http://www.securityfocus.com/bid/104282"}]}},"nvd":{"publishedDate":"2018-05-29 13:29:00","lastModifiedDate":"2021-07-08 16:37:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:broadcom:symantec_proxysg:6.6:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:broadcom:symantec_proxysg:6.5:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:broadcom:symantec_proxysg:6.7:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:broadcom:advanced_secure_gateway:6.7:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:broadcom:advanced_secure_gateway:6.6:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2018","CveId":"5241","Ordinal":"121198","Title":"CVE-2018-5241","CVE":"CVE-2018-5241","Year":"2018"},"notes":[{"CveYear":"2018","CveId":"5241","Ordinal":"1","NoteData":"Symantec Advanced Secure Gateway (ASG) 6.6 and 6.7, and ProxySG 6.5, 6.6, and 6.7 are susceptible to a SAML authentication bypass vulnerability. The products can be configured with a SAML authentication realm to authenticate network users in intercepted proxy traffic. When parsing SAML responses, ASG and ProxySG incorrectly handle XML nodes with comments. A remote attacker can modify a valid SAML response without invalidating its cryptographic signature. This may allow the attacker to bypass user authentication security controls in ASG and ProxySG. This vulnerability only affects authentication of network users in intercepted traffic. It does not affect administrator user authentication for the ASG and ProxySG management consoles.","Type":"Description","Title":null},{"CveYear":"2018","CveId":"5241","Ordinal":"2","NoteData":"2018-05-29","Type":"Other","Title":"Published"},{"CveYear":"2018","CveId":"5241","Ordinal":"3","NoteData":"2018-05-30","Type":"Other","Title":"Modified"}]}}}