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Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS / 23.04 : OpenSSL vulnerabilities (USN-6039-1)

critical Nessus Plugin ID 174752

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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 LTS / 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6039-1 advisory.

 It was discovered that OpenSSL was not properly managing file locks when processing policy constraints. If a user or automated system were tricked into processing a certificate chain with specially crafted policy constraints, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3996)

 David Benjamin discovered that OpenSSL was not properly performing the verification of X.509 certificate chains that include policy constraints, which could lead to excessive resource consumption. If a user or automated system were tricked into processing a specially crafted X.509 certificate chain that includes policy constraints, a remote attacker could possibly use this issue to cause a denial of service.
 (CVE-2023-0464)

 David Benjamin discovered that OpenSSL was not properly handling invalid certificate policies in leaf certificates, which would result in certain policy checks being skipped for the certificate. If a user or automated system were tricked into processing a specially crafted certificate, a remote attacker could possibly use this issue to assert invalid certificate policies and circumvent policy checking.
 (CVE-2023-0465)

 David Benjamin discovered that OpenSSL incorrectly documented the functionalities of function X509_VERIFY_PARAM_add0_policy, stating that it would implicitly enable certificate policy checks when doing certificate verifications, contrary to its implementation. This could cause users and applications to not perform certificate policy checks even when expected to do so. (CVE-2023-0466)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-6039-1

Plugin Details

Severity: Critical

ID: 174752

File Name: ubuntu_USN-6039-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/25/2023

Updated: 9/19/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2023-0466

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2022-3996

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libssl1.1, p-cpe:/a:canonical:ubuntu_linux:libssl3, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:openssl, p-cpe:/a:canonical:ubuntu_linux:libssl1.0.0, cpe:/o:canonical:ubuntu_linux:23.04, p-cpe:/a:canonical:ubuntu_linux:openssl1.0, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libssl-dev, p-cpe:/a:canonical:ubuntu_linux:libssl1.0-dev, cpe:/o:canonical:ubuntu_linux:16.04:-:esm

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/25/2023

Vulnerability Publication Date: 12/13/2022

Reference Information

CVE: CVE-2022-3996, CVE-2023-0464, CVE-2023-0466

IAVA: 2022-A-0518-S, 2023-A-0158-S

USN: 6039-1