FreeBSD : go -- multiple vulnerabilities (6f5192f5-75a7-11ed-83c0-411d43ce7fe4)

high Nessus Plugin ID 168420

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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 multiple vulnerabilities as referenced in the 6f5192f5-75a7-11ed-83c0-411d43ce7fe4 advisory.

- The Go project reports: os, net/http: avoid escapes from os.DirFS and http.Dir on Windows The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permitted access to Windows device files under that root. For example, os.DirFS(C:/tmp).Open(COM1) would open the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory \(the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. The behavior of os.DirFS() has changed. Previously, an empty root was treated equivalently to /, so os.DirFS().Open(tmp) would open the path /tmp. This now returns an error. net/http: limit canonical header cache by bytes, not entries An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection. (CVE-2022-41717, CVE-2022-41720)

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 168420

File Name: freebsd_pkg_6f5192f575a711ed83c0411d43ce7fe4.nasl

Version: 1.5

Type: local

Family: FreeBSD Local Security Checks

Published: 12/6/2022

Updated: 2/24/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2022-41720

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:H/I:N/A:N

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:go118, p-cpe:/a:freebsd:freebsd:go119, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/6/2022

Vulnerability Publication Date: 12/6/2022

Reference Information

CVE: CVE-2022-41717, CVE-2022-41720

IAVB: 2022-B-0059-S

Detections

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