FreeBSD : FreeBSD -- Integer overflow in libnv (93c12fe5-7716-11ef-9a62-002590c1f29c)

high Nessus Plugin ID 207544

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 93c12fe5-7716-11ef-9a62-002590c1f29c advisory.

A malicious value of size in a structure of packed libnv can cause an integer overflow, leading to the allocation of a smaller buffer than required for the parsed data. The introduced check was incorrect, as it took into account the size of the pointer, not the structure. This vulnerability affects both kernel and userland.
This issue was originally intended to be addressed as part of FreeBSD-SA-24:09.libnv, but due to a logic issue, this issue was not properly addressed.
It is possible for an attacker to overwrite portions of memory (in userland or the kernel) as the allocated buffer might be smaller than the data received from a malicious process. This vulnerability could result in privilege escalation or cause a system panic.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 207544

File Name: freebsd_pkg_93c12fe5771611ef9a62002590c1f29c.nasl

Version: 1.2

Type: local

Family: FreeBSD Local Security Checks

Published: 9/21/2024

Updated: 9/26/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-45287

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:freebsd-kernel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Settings/ParanoidReport, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 9/20/2024

Vulnerability Publication Date: 9/5/2024

Reference Information

CVE: CVE-2024-45287

IAVA: 2024-A-0545-S

Detections

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