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CVE-2021-20322

Published: Feb 18, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-330
7.4HIGH
NVD MITRE
EPSS Score
6.9%
Top 6.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
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:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-330

Affected Products

netapp
commercial·US
active iq unified manager
Hardware Firmware
e-series santricity os controller
Hardware Firmware
solidfire\, enterprise sds \& hci storage node
Hardware Firmware
solidfire \& hci management node
Hardware Firmware
fas baseboard management controller firmware
Hardware Firmware
aff baseboard management controller firmware
Hardware Firmware
aff a700s firmware
Hardware Firmware
h700s firmware
Hardware Firmware
oracle
commercial·USaka oracle corp.
communications cloud native core binding support function
Communications
communications cloud native core network exposure functionOn-premWeb App
Communications / messaging-chat
communications cloud native core policyOn-premDatabase
Databases / cache-message-queue
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
LinuxOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
Astra Linux Special Edition для «Эльбрус»On-premOS
Operating Systems / linux-distro
linux
oss-projectaka the linux kernel
linux kernelOn-premOS
Operating Systems
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
and 12 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-20322?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=2014230
bugzilla.redhat.com
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=4785305c05b25a242e5314cc821f54ade4c18810
git.kernel.org
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=6457378fe796815c973f631a1904e147d6ee33b1
git.kernel.org
and 27 more references View all →

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