CVE Vulnerability

CVE-2022-3643

Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior.

10 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://xenbits.xenproject.org/xsa/advisory-423.txt Vendor Advisory
http://www.openwall.com/lists/oss-security/2022/12/07/2 Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Information

Published : 2022-12-07 01:15

Updated : 2023-01-10 07:41

NVD link : CVE-2022-3643

Mitre link : CVE-2022-3643

Products Affected

Linux

Linux Kernel

CWE
CWE-74