Vulnerability Details : CVE-2021-23017
Potential exploit
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.
Products affected by CVE-2021-23017
- cpe:2.3:a:oracle:goldengate:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_operations_monitor:3.4:*:*:*:*:*:*:*
- 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_operations_monitor:4.4:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_communications_broker:3.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_session_border_controller:8.4:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_session_border_controller:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_session_border_controller:8.4:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_session_border_controller:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_control_plane_monitor:3.4:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- Oracle » Communications Fraud MonitorVersions from including (>=) 3.4 and up to, including, (<=) 4.4cpe:2.3:a:oracle:communications_fraud_monitor:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_telephony_fraud_monitor:3.4:*:*:*:*:*:*:*
- 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:blockchain_platform:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
- cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:*
Threat overview for CVE-2021-23017
Top countries where our scanners detected CVE-2021-23017
Top open port discovered on systems with this issue
80
IPs affected by CVE-2021-23017 5,084,128
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2021-23017!
*Directly or indirectly through your vendors, service providers and 3rd parties.
Powered by
attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2021-23017
76.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 99 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23017
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.7
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |
2.2
|
5.5
|
NIST |
CWE ids for CVE-2021-23017
-
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.Assigned by:
- f5sirt@f5.com (Primary)
- nvd@nist.gov (Secondary)
References for CVE-2021-23017
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/
[SECURITY] Fedora 34 Update: nginx-1.20.1-2.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/
[SECURITY] Fedora 33 Update: nginx-1.20.1-2.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujan2022.html
Oracle Critical Patch Update Advisory - January 2022Patch;Third Party Advisory
-
http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html
[nginx-announce] nginx security advisory (CVE-2021-23017)Mailing List;Patch;Vendor Advisory
-
https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f@%3Cnotifications.apisix.apache.org%3E
[GitHub] [apisix-website] liuxiran merged pull request #362: docs: added "Apache APISIX not affected by NGINX CVE-2021-23017" - Pony MailMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31@%3Cnotifications.apisix.apache.org%3E
[apisix-website] branch master updated: docs: added "Apache APISIX not affected by NGINX CVE-2021-23017" (#362) - Pony MailMailing List;Third Party Advisory
-
http://packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Service.html
Nginx 1.20.0 Denial Of Service ≈ Packet StormThird Party Advisory;VDB Entry
-
https://support.f5.com/csp/article/K12331123,
Page Not FoundBroken Link
-
https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009@%3Cnotifications.apisix.apache.org%3E
[GitHub] [apisix-website] liuxiran commented on a change in pull request #362: docs: added "Apache APISIX not affected by NGINX CVE-2021-23017" - Pony MailMailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210708-0006/
CVE-2021-23017 NGINX Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.oracle.com/security-alerts/cpuoct2021.html
Oracle Critical Patch Update Advisory - October 2021Patch;Third Party Advisory
-
https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c@%3Cnotifications.apisix.apache.org%3E
[GitHub] [apisix-website] netlify[bot] edited a comment on pull request #362: docs: added "Apache APISIX not affected by NGINX CVE-2021-23017" - Pony MailMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba@%3Cnotifications.apisix.apache.org%3E
[GitHub] [apisix-website] Serendipity96 opened a new pull request #362: feat: add new blog - Pony MailMailing List;Third Party Advisory
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