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CVE-2023-3773

Date: July 25, 2023

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to cause a 4 byte out-of-bounds read of XFRMA_MTIMER_THRESH when parsing netlink attributes, leading to potential leakage of sensitive heap data to userspace.

Language: C

Severity Score

Related Resources (7)

https://www.debian.org/security/2023/dsa-5492
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://nvd.nist.gov/vuln/detail/CVE-2023-3773
https://access.redhat.com/security/cve/CVE-2023-3773
https://bugzilla.redhat.com/show_bug.cgi?id=2218944
https://access.redhat.com/errata/RHSA-2023:6583
https://www.mend.io/vulnerability-database/CVE-2023-3773

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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