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CVE-2021-4203

Published: Mar 25, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-362
6.8MEDIUM
NVD MITRE
EPSS Score
1.8%
Top 24.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-362CWE-416

Affected Products

netapp
commercial·US
active iq unified manager
Hardware Firmware
e-series santricity os controller
Hardware Firmware
element software
Hardware Firmware
hci management node
Hardware Firmware
solidfire
Hardware Firmware
bootstrap os
Hardware Firmware
a700s firmware
Hardware Firmware
h300s 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
linux
oss-projectaka the linux kernel
linux kernelOn-premOS
Operating Systems
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
IBM Corp.
commercial·USaka ibm, ibm corporation
Elastic Storage SystemOn-premDatabase
Databases / data-warehouse-analytics
and 6 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
Is your org exposed to CVE-2021-4203?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

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=2036934
bugzilla.redhat.com
https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1
bugs.chromium.org
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814
git.kernel.org
and 17 more references View all →
News mentions
Could not load news mentions.

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