Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : OpenSSH vulnerabilities (USN-3885-1)

medium Nessus Plugin ID 122055

Synopsis

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

Description

Harry Sintonen discovered multiple issues in the OpenSSH scp utility.
If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output.

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.

See Also

https://ubuntu.com/security/notices/USN-3885-1

Plugin Details

Severity: Medium

ID: 122055

File Name: ubuntu_USN-3885-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 2/8/2019

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2019-6111

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2019-6109

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:openssh-client, p-cpe:/a:canonical:ubuntu_linux:openssh-client-ssh1, p-cpe:/a:canonical:ubuntu_linux:openssh-client-udeb, p-cpe:/a:canonical:ubuntu_linux:openssh-server, p-cpe:/a:canonical:ubuntu_linux:openssh-server-udeb, p-cpe:/a:canonical:ubuntu_linux:openssh-sftp-server, p-cpe:/a:canonical:ubuntu_linux:ssh, p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome, p-cpe:/a:canonical:ubuntu_linux:ssh-krb5, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

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: 2/7/2019

Vulnerability Publication Date: 1/10/2019

Reference Information

CVE: CVE-2018-20685, CVE-2019-6109, CVE-2019-6111

USN: 3885-1