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Tenable Nessus Agent 8.3.3 / 8.3.4 Multiple Vulnerabilities (TNS-2023-13)

medium Nessus Plugin ID 172637

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Synopsis

An instance of Nessus Agent installed on the remote system is affected by multiple vulnerabilities.

Description

According to its self-reported version, the Tenable Nessus Agent running on the remote host is either 8.3.3 or 8.3.4. It is, therefore, affected by multiple vulnerabilities in OpenSSL prior to version 1.1.1t:

 - An attacker that had observed a genuine connection between a client and a server could use the flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection. (CVE-2022-4304)

 - The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes any header data and the payload data. Under certain conditions, a double free will occur. This will most likely lead to a crash. (CVE-2022-4450)

 - The public API function BIO_new_NDEF is a helper function used for streaming ASN.1 data via a BIO. Under certain conditions, the BIO chain is not properly cleaned up and the BIO passed by the caller still retains internal pointers to the previously freed filter BIO. This will most likely result in a crash. (CVE-2023-0215)

 - AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. In the special case of in place encryption, sixteen bytes of the plaintext would be revealed. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q (Affected 1.1.1-1.1.1p). (CVE-2022-2097) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Tenable Nessus Agent 8.3.5 or later.

See Also

https://www.tenable.com/security/tns-2023-13

Plugin Details

Severity: Medium

ID: 172637

File Name: tenable_nessus_agent_TNS-2023-13.nasl

Version: 1.3

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 3/17/2023

Updated: 8/30/2023

Configuration: Enable thorough checks

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2022-2097

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.5

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

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

CVSS Score Source: CVE-2022-4304

Vulnerability Information

CPE: cpe:/a:tenable:nessus_agent

Required KB Items: installed_sw/Tenable Nessus Agent

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/9/2023

Vulnerability Publication Date: 3/9/2023

Reference Information

CVE: CVE-2022-2097, CVE-2022-4304, CVE-2022-4450, CVE-2023-0215