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Ubuntu 16.04 LTS / 18.04 LTS : Salt vulnerabilities (USN-6948-1)

critical Nessus Plugin ID 205228

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6948-1 advisory.

 It was discovered that Salt incorrectly handled crafted web requests. A remote attacker could possibly use this issue to run arbitrary commands. (CVE-2020-16846)

 It was discovered that Salt incorrectly created certificates with weak file permissions. (CVE-2020-17490)

 It was discovered that Salt incorrectly handled credential validation. A remote attacker could possibly use this issue to bypass authentication. (CVE-2020-25592)

 It was discovered that Salt incorrectly handled crafted process names. An attacker could possibly use this issue to run arbitrary commands. This issue only affected Ubuntu 18.04 LTS. (CVE-2020-28243)

 It was discovered that Salt incorrectly handled validation of SSL/TLS certificates. A remote attacker could possibly use this issue to spoof a trusted entity. (CVE-2020-28972, CVE-2020-35662)

 It was discovered that Salt incorrectly handled credential validation. A remote attacker could possibly use this issue to run arbitrary code. (CVE-2021-25281)

 It was discovered that Salt incorrectly handled crafted paths. A remote attacker could possibly use this issue to perform directory traversal. (CVE-2021-25282)

 It was discovered that Salt incorrectly handled template rendering. A remote attacker could possibly this issue to run arbitrary code. (CVE-2021-25283)

 It was discovered that Salt incorrectly handled logging. An attacker could possibly use this issue to discover credentials. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-25284)

 It was discovered that Salt incorrectly handled crafted web requests. A remote attacker could possibly use this issue to run arbitrary commands. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3148)

 It was discovered that Salt incorrectly handled input sanitization. A remote attacker could possibly use this issue to run arbitrary commands. (CVE-2021-3197)

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-6948-1

Plugin Details

Severity: Critical

ID: 205228

File Name: ubuntu_USN-6948-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/8/2024

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

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

CVSS Score Source: CVE-2021-3197

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:salt-cloud, p-cpe:/a:canonical:ubuntu_linux:salt-proxy, p-cpe:/a:canonical:ubuntu_linux:salt-common, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:salt-ssh, p-cpe:/a:canonical:ubuntu_linux:salt-master, p-cpe:/a:canonical:ubuntu_linux:salt-api, p-cpe:/a:canonical:ubuntu_linux:salt-syndic, p-cpe:/a:canonical:ubuntu_linux:salt-minion

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/8/2024

Vulnerability Publication Date: 5/7/2020

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Exploitable With

Metasploit (SaltStack Salt REST API Arbitrary Command Execution)

Reference Information

CVE: CVE-2020-16846, CVE-2020-17490, CVE-2020-25592, CVE-2020-28243, CVE-2020-28972, CVE-2020-35662, CVE-2021-25281, CVE-2021-25282, CVE-2021-25283, CVE-2021-25284, CVE-2021-3148, CVE-2021-3197

USN: 6948-1