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Debian DSA-4382-1 : rssh - security update

critical Nessus Plugin ID 121560

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Synopsis

The remote Debian host is missing a security-related update.

Description

Nick Cleaton discovered two vulnerabilities in rssh, a restricted shell that allows users to perform only scp, sftp, cvs, svnserve (Subversion), rdist and/or rsync operations. Missing validation in the rsync support could result in the bypass of this restriction, allowing the execution of arbitrary shell commands.

Solution

Upgrade the rssh packages.

For the stable distribution (stretch), these problems have been fixed in version 2.3.4-5+deb9u2.

See Also

https://security-tracker.debian.org/tracker/source-package/rssh

https://packages.debian.org/source/stretch/rssh

https://www.debian.org/security/2019/dsa-4382

Plugin Details

Severity: Critical

ID: 121560

File Name: debian_DSA-4382.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2/4/2019

Updated: 6/24/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2019-3464

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:rssh, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/2/2019

Vulnerability Publication Date: 2/6/2019

Reference Information

CVE: CVE-2019-3463, CVE-2019-3464

DSA: 4382