CVE-2023-39193 Kernel: netfilter: xtables sctp out-of-bounds read in match_flags()

2023-10-0917:57:49

CWE-125

redhat

github.com

netfilter subsystem

linux kernel

sctp_mt_check

privilege escalation

out-of-bounds read

CVSS3

6.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

AI Score

6.2

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.