CVE-2021-45468

Imperva Web Application Firewall (WAF) before 2021-12-23 allows remote unauthenticated attackers to use "Content-Encoding: gzip" to evade WAF security controls and send malicious HTTP POST requests to web servers behind the WAF.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bishopfox.com/blog/imperva-eliminates-critical-exposure	Exploit Third Party Advisory
https://bishopfox.com/blog/imperva-eliminates-critical-exposure	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:imperva:web_application_firewall:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:32

Type	Values Removed	Values Added
References	~~() https://bishopfox.com/blog/imperva-eliminates-critical-exposure - Exploit, Third Party Advisory~~	() https://bishopfox.com/blog/imperva-eliminates-critical-exposure - Exploit, Third Party Advisory

Information

Published : 2022-01-14 18:15

Updated : 2024-11-21 06:32

NVD link : CVE-2021-45468

Mitre link : CVE-2021-45468

CVE.ORG link : CVE-2021-45468

JSON object : View

Products Affected

imperva

web_application_firewall

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

{"id": "CVE-2021-45468", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2022-01-14T18:15:10.203", "references": [{"url": "https://bishopfox.com/blog/imperva-eliminates-critical-exposure", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bishopfox.com/blog/imperva-eliminates-critical-exposure", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-444"}]}], "descriptions": [{"lang": "en", "value": "Imperva Web Application Firewall (WAF) before 2021-12-23 allows remote unauthenticated attackers to use \"Content-Encoding: gzip\" to evade WAF security controls and send malicious HTTP POST requests to web servers behind the WAF."}, {"lang": "es", "value": "Imperva Web Application Firewall (WAF) versiones anteriores a 31-12-2021 permite a atacantes remotos no autenticados usar \"Content-Encoding: gzip\" para omitir los controles de seguridad del WAF y enviar peticiones HTTP POST maliciosas a servidores web detr\u00e1s del WAF"}], "lastModified": "2024-11-21T06:32:16.340", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:imperva:web_application_firewall:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5418199D-4B2D-4019-AA2E-E97F9A89EA85", "versionEndExcluding": "2021-12-23"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}