Cyber Resilience

CVE-2021-43267

CriticalPublic PoC

Published: 02 November 2021

Published
02 November 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.7262 98.8th percentile
Risk Priority 63 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-43267 is a critical-severity Improper Validation of Specified Quantity in Input (CWE-1284) vulnerability in Linux Linux Kernel. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 1.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.

CWE(s)
CWE-1284

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

linux
linux kernel
5.10 — 5.10.77 · 5.11 — 5.14.16
fedoraproject
fedora
34, 35
netapp
h300s firmware
all versions
netapp
h500s firmware
all versions
netapp
h700s firmware
all versions
netapp
h300e firmware
all versions
netapp
h500e firmware
all versions
netapp
h700e firmware
all versions
netapp
h410s firmware
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References