Alpine: rssh: security update to 2.3.4-r2

critical Tenable Self-Hosted Container Security Plugin ID 424412

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- Insufficient sanitization of arguments passed to rsync can bypass the restrictions imposed by rssh, a
restricted shell that should restrict users to perform only rsync operations, resulting in the execution
of arbitrary shell commands. (CVE-2019-3463)

- rssh version 2.3.4 contains a CWE-77: Improper Neutralization of Special Elements used in a Command
('Command Injection') vulnerability in allowscp permission that can result in Local command execution.
This attack appear to be exploitable via An authorized SSH user with the allowscp permission.
(CVE-2019-1000018)

See Also

https://security.alpinelinux.org/vuln/CVE-2019-1000018

https://security.alpinelinux.org/vuln/CVE-2019-3463

Plugin Details

Severity: Critical

ID: 424412

Version: Revision 1.9

Type: Local

Published: 4/4/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.58

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-3463

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 1/16/2019

Reference Information

CVE: CVE-2019-1000018, CVE-2019-3463

BID: 106806, 106839