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Ubuntu 4.10 / 5.04 / 5.10 : openssh vulnerability (USN-255-1)

medium Nessus Plugin ID 21063

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Tomas Mraz discovered a shell code injection flaw in scp. When doing local-to-local or remote-to-remote copying, scp expanded shell escape characters. By tricking an user into using scp on a specially crafted file name (which could also be caught by using an innocuous wild card like '*'), an attacker could exploit this to execute arbitrary shell commands with the privilege of that user.

Please be aware that scp is not designed to operate securely on untrusted file names, since it needs to stay compatible with rcp.
Please use sftp for automated systems and potentially untrusted file names.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 21063

File Name: ubuntu_USN-255-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 3/13/2006

Updated: 1/19/2021

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: 6.1

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:5.04, p-cpe:/a:canonical:ubuntu_linux:openssh-client, p-cpe:/a:canonical:ubuntu_linux:ssh, cpe:/o:canonical:ubuntu_linux:5.10, p-cpe:/a:canonical:ubuntu_linux:openssh-server, cpe:/o:canonical:ubuntu_linux:4.10, p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/21/2006

Vulnerability Publication Date: 9/28/2005

Reference Information

CVE: CVE-2006-0225

USN: 255-1