CVE-2021-23017critical
Description
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.
References
http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html
https://support.f5.com/csp/article/K12331123,
https://lists.apache.org/thread.html/[email protected]%3Cnotifications.apisix.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cnotifications.apisix.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cnotifications.apisix.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cnotifications.apisix.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cnotifications.apisix.apache.org%3E
https://security.netapp.com/advisory/ntap-20210708-0006/
https://www.oracle.com/security-alerts/cpuoct2021.html
Details
Source: MITRE
Published: 2021-06-01
Updated: 2022-05-10
Type: CWE-193
Risk Information
CVSS v2
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
CVSS v3
Base Score: 9.4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Impact Score: 5.5
Exploitability Score: 3.9
Severity: CRITICAL