CVE-2023-27496

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script).

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5	Exploit Vendor Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:envoyproxy:envoy::::::::
	cpe:2.3:a:envoyproxy:envoy::::::::
	cpe:2.3:a:envoyproxy:envoy::::::::
	cpe:2.3:a:envoyproxy:envoy::::::::

History

21 Nov 2024, 07:53

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~7.5~~	v2 : unknown v3 : 6.5
References	~~() https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5 - Exploit, Vendor Advisory~~	() https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5 - Exploit, Vendor Advisory

Information

Published : 2023-04-04 20:15

Updated : 2024-11-21 07:53

NVD link : CVE-2023-27496

Mitre link : CVE-2023-27496

CVE.ORG link : CVE-2023-27496

JSON object : View

Products Affected

envoyproxy

envoy

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

{"id": "CVE-2023-27496", "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2023-04-04T20:15:07.520", "references": [{"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5", "tags": ["Exploit", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script). \n"}], "lastModified": "2024-11-21T07:53:01.487", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DAD93214-C958-4A69-9291-15D1C22CFD3F", "versionEndExcluding": "1.22.9"}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17BFB303-DA5A-4E83-93F7-3C1EA340E434", "versionEndExcluding": "1.23.6", "versionStartIncluding": "1.23.0"}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92B633B8-FA4A-4630-9302-96F2C8336E36", "versionEndExcluding": "1.24.4", "versionStartIncluding": "1.24.0"}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AFC6741-6FDF-47F6-A4AF-B5F5233ABB71", "versionEndExcluding": "1.25.3", "versionStartIncluding": "1.25.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}

6.5 /10