RancherOS < 1.4.1 Multiple Information Disclosure Vulnerabilities

medium Nessus Plugin ID 132253
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 5.2

Synopsis

The remote device is missing a vendor-supplied security patch

Description

The remote host is running a version of RancherOS prior to v1.4.1, hence is exposed to multiple side-channel vulnerabilities:

- Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis. (CVE-2018-3620)

- Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.
(CVE-2018-3639)

Solution

Upgrade to RancherOS v1.4.1 or later

See Also

https://rancher.com/docs/os/v1.x/en/about/security/

https://github.com/rancher/os/releases/tag/v1.4.1

Plugin Details

Severity: Medium

ID: 132253

File Name: rancheros_1_4_1.nasl

Version: 1.5

Type: local

Family: Misc.

Published: 12/19/2019

Updated: 4/15/2021

Dependencies: ssh_get_info.nasl, os_fingerprint_linux_distro.nasl

Risk Information

Risk Factor: Medium

VPR Score: 5.2

CVSS Score Source: CVE-2018-3620

CVSS v2.0

Base Score: 4.7

Temporal Score: 3.7

Vector: AV:L/AC:M/Au:N/C:C/I:N/A:N

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 5.6

Temporal Score: 5.1

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

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:rancher:rancheros

Required KB Items: Host/local_checks_enabled, Host/RancherOS/version, Host/RancherOS

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/19/2018

Vulnerability Publication Date: 5/22/2018

Reference Information

CVE: CVE-2018-3620, CVE-2018-3639

BID: 104232, 105080