CVE-2021-23017: F5 Nginx Web Server, Nginx Plus vulnerability
F5 · Nginx Web Server, Nginx Plus
Vendor fix available · Affected: F5 Nginx Web Server, Nginx Plus · Exploitation: likely to be exploited (10% or more)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 99% of scored CVEs
Not scored yet. The CVE record carries no CVSS score.
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Nginx Web Server, Nginx PlusNginx Web Server versions 0.6.18 thru 1.20.0 before 1.20.1,…
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Likely to be exploited (10% or more). EPSS gives it a 10% or higher chance of exploitation in the next 30 days.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- F5
- Published
- June 2021
- Bounty reports
- 1 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2021-23017
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- 1-byte heap buffer overflow in DNS resolverInternet Bug Bounty · 2021 · medium severityValid
CoverageNo articles yet
No CyberSIXT article names CVE-2021-23017 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-193cwe.mitre.org
- Vendor advisorylists.fedoraproject.org
- Vendor advisorylists.fedoraproject.org
- support.f5.com/csp/article/K12331123%2Csupport.f5.com
- mailman.nginx.org/pipermail/nginx-announce/2021/000300.htmlmailman.nginx.org
- oracle.com/security-alerts/cpuoct2021.htmloracle.com
- security.netapp.com/advisory/ntap-20210708-0006security.netapp.com
- oracle.com/security-alerts/cpujan2022.htmloracle.com
- oracle.com/security-alerts/cpuapr2022.htmloracle.com
- packetstormsecurity.com/files/167720/Nginx-1.20.0-Denial-Of-Servpacketstormsecurity.com
- Mailing listlists.apache.org
- Mailing listlists.apache.org
- Mailing listlists.apache.org
2 more references are in the CVE record.