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CVE-2021-23017

Published: Jun 1, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-193
7.7HIGH
NVD MITRE
EPSS Score
53.5%
Top 1.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-193

Affected Products

Oracle Corp.
commercial·USaka oracle
Oracle Communications Operations MonitorOn-prem
Communications / messaging-chat
Oracle Communications Session Border ControllerOn-premNetwork Device
Networking Infrastructure
Oracle Enterprise Session Border ControllerOn-premNetwork Device
Networking Infrastructure
Blockchain PlatformOn-prem
Cloud & SaaS / saas-application
Enterprise Communications BrokerOn-premWeb App
Communications / messaging-chat
GoldenGateOn-premWeb App
Databases / db-tooling
Oracle Enterprise Telephony Fraud MonitorOn-premWeb App
Communications
Oracle Communications Fraud MonitorOn-premWeb App
Communications
Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
Red Hat Software CollectionsOn-prem
Operating Systems / linux-distro
Ansible TowerOn-prem
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
Fedora Project
oss-project·USaka fedora
FedoraOn-premOS
Operating Systems / linux-distro
and 19 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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References

http://nginx.org/en/security_advisories.html
nginx.org
https://redos.red-soft.ru/updatesec/
redos.red-soft.ru
https://www.cybersecurity-help.cz/vdb/SB2021052543
cybersecurity-help.cz
and 27 more references View all →

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