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Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM : xrdp vulnerabilities (USN-6474-1)

critical Nessus Plugin ID 185416

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6474-1 advisory.

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483, CVE-2023-42822)

 It was discovered that xrdp improperly handled session establishment errors. An attacker could potentially use this issue to bypass the OS-level session restrictions by PAM. (CVE-2023-40184)

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
 (CVE-2022-23468)

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
 (CVE-2022-23480, CVE-2022-23482, CVE-2022-23484)

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23477, CVE-2022-23493)

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23478)

 It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-23613)

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

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 xorgxrdp, xrdp and / or xrdp-pulseaudio-installer packages.

See Also

https://ubuntu.com/security/notices/USN-6474-1

Plugin Details

Severity: Critical

ID: 185416

File Name: ubuntu_USN-6474-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/9/2023

Updated: 8/27/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2022-23613

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS Score Source: CVE-2022-23484

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:xorgxrdp, p-cpe:/a:canonical:ubuntu_linux:xrdp, p-cpe:/a:canonical:ubuntu_linux:xrdp-pulseaudio-installer, cpe:/o:canonical:ubuntu_linux:22.04:-:esm, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, cpe:/o:canonical:ubuntu_linux:20.04:-:esm

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 11/8/2023

Vulnerability Publication Date: 2/7/2022

Reference Information

CVE: CVE-2022-23468, CVE-2022-23477, CVE-2022-23478, CVE-2022-23479, CVE-2022-23480, CVE-2022-23481, CVE-2022-23482, CVE-2022-23483, CVE-2022-23484, CVE-2022-23493, CVE-2022-23613, CVE-2023-40184, CVE-2023-42822

USN: 6474-1