CVE-2021-23017

Name
CVE-2021-23017
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.
NVD Severity
high
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html
MISC https://support.f5.com/csp/article/K12331123,
MLIST https://lists.apache.org/thread.html/r6fc5c57b38e93e36213e9a18c8a4e5dbd5ced1c7e57f08a1735975ba@%3Cnotifications.apisix.apache.org%3E
MLIST https://lists.apache.org/thread.html/rf318aeeb4d7a3a312734780b47de83cefb7e6995da0b2cae5c28675c@%3Cnotifications.apisix.apache.org%3E
MLIST https://lists.apache.org/thread.html/r37e6b2165f7c910d8e15fd54f4697857619ad2625f56583802004009@%3Cnotifications.apisix.apache.org%3E
MLIST https://lists.apache.org/thread.html/rf232eecd47fdc44520192810560303073cefd684b321f85e311bad31@%3Cnotifications.apisix.apache.org%3E
MLIST https://lists.apache.org/thread.html/r4d4966221ca399ce948ef34884652265729d7d9ef8179c78d7f17e7f@%3Cnotifications.apisix.apache.org%3E
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SFVYHC7OXTEO4SMBWXDVK6E5IMEYMEE/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNKOP2JR5L7KCIZTJRZDCUPJTUONMC5I/
Third Party Advisory https://security.netapp.com/advisory/ntap-20210708-0006/
MISC https://www.oracle.com/security-alerts/cpuoct2021.html
Patch https://www.oracle.com/security-alerts/cpujan2022.html
MISC https://www.oracle.com/security-alerts/cpuapr2022.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:nginx:nginx:*:*:*:*:*:*:*:* nginx >= 0.6.18 < 1.20.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nginx 3.10-main 1.16.1-r3 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx 3.13-main 1.18.0-r15 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx 3.12-main 1.18.0-r3 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx 3.11-main 1.16.1-r8 Jakub Jirutka <jakub@jirutka.cz> fixed