CVE-2021-23017

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

CVSS v3.0 7.7 HIGH
CVSS v2.0 6.8 MEDIUM

7.7^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html	Mailing List Patch Vendor Advisory
https://support.f5.com/csp/article/K12331123,	Broken Link
https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba@%3Cnotifications.apisix.apache.org%3E	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c@%3Cnotifications.apisix.apache.org%3E	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009@%3Cnotifications.apisix.apache.org%3E	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31@%3Cnotifications.apisix.apache.org%3E	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f@%3Cnotifications.apisix.apache.org%3E	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210708-0006/	Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:33:::::::*
	cpe:2.3:o:fedoraproject:fedora:34:::::::*

Configuration 4 (hide)

cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

Configuration 5 (hide)

OR	cpe:2.3:a:oracle:communications_operations_monitor:3.4:::::::*
	cpe:2.3:a:oracle:enterprise_session_border_controller:8.4:::::::*
	cpe:2.3:a:oracle:communications_operations_monitor:4.2:::::::*
	cpe:2.3:a:oracle:communications_operations_monitor:4.3:::::::*
	cpe:2.3:a:oracle:communications_session_border_controller:8.4:::::::*
	cpe:2.3:a:oracle:enterprise_session_border_controller:9.0:::::::*
	cpe:2.3:a:oracle:communications_session_border_controller:9.0:::::::*
	cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:::::::*
	cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.2:::::::*
	cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.3:::::::*
	cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:4.4:::::::*
	cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:3.4:::::::*
	cpe:2.3:a:oracle:communications_operations_monitor:4.4:::::::*
	cpe:2.3:a:oracle:communications_fraud_monitor::::::::
	cpe:2.3:a:oracle:communications_control_plane_monitor:4.2:::::::*
	cpe:2.3:a:oracle:communications_control_plane_monitor:4.3:::::::*
	cpe:2.3:a:oracle:communications_control_plane_monitor:4.4:::::::*
	cpe:2.3:a:oracle:communications_control_plane_monitor:3.4:::::::*
	cpe:2.3:a:oracle:goldengate::::::::
	cpe:2.3:a:oracle:blockchain_platform::::::::

Information

Published : 2021-06-01 06:15

Updated : 2022-09-14 08:49

NVD link : CVE-2021-23017

Mitre link : CVE-2021-23017

JSON object : View

CWE

CWE-193

Off-by-one Error

Products Affected

oracle

enterprise_communications_broker
communications_control_plane_monitor
enterprise_session_border_controller
enterprise_telephony_fraud_monitor
blockchain_platform
communications_operations_monitor
communications_session_border_controller
goldengate
communications_fraud_monitor

nginx

fedoraproject

fedora

netapp

ontap_select_deploy_administration_utility

openresty

openresty

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"https://security.netapp.com/advisory/ntap-20210708-0006/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "name": "https://www.oracle.com/security-alerts/cpuoct2021.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.oracle.com/security-alerts/cpujan2022.html", "name": "https://www.oracle.com/security-alerts/cpujan2022.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.oracle.com/security-alerts/cpuapr2022.html", "name": "https://www.oracle.com/security-alerts/cpuapr2022.html", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html", "name": "http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-193"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-23017", "ASSIGNER": "f5sirt@f5.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 2.2}}, "publishedDate": "2021-06-01T13:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "1.20.1", "versionStartIncluding": "0.6.18"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "1.19.3.2"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:oracle:communications_operations_monitor:3.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:enterprise_session_border_controller:8.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_operations_monitor:4.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_operations_monitor:4.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": 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"cpe:2.3:a:oracle:communications_operations_monitor:4.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_fraud_monitor:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "4.4", "versionStartIncluding": "3.4"}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_control_plane_monitor:4.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:communications_control_plane_monitor:3.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:oracle:goldengate:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "21.4.0.0.0"}, {"cpe23Uri": "cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "21.1.2"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-09-14T15:49Z"}

7.7 /10