Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : openssh vulnerabilities (USN-3885-1)

Medium Nessus Plugin ID 122055

Synopsis

The remote Ubuntu host is missing a security-related patch.

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 openssh-client package.

See Also

https://usn.ubuntu.com/3885-1/

Plugin Details

Severity: Medium

ID: 122055

File Name: ubuntu_USN-3885-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/02/08

Updated: 2019/09/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.5

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:openssh-client, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

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: 2019/02/07

Vulnerability Publication Date: 2019/01/10

Reference Information

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

USN: 3885-1