Debian DSA-4280-1 : openssh - security update

Medium Nessus Plugin ID 112066

Synopsis

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

Description

Dariusz Tytko, Michal Sajdak and Qualys Security discovered that OpenSSH, an implementation of the SSH protocol suite, was prone to a user enumeration vulnerability. This would allow a remote attacker to check whether a specific user account existed on the target server.

Solution

Upgrade the openssh packages.

For the stable distribution (stretch), this problem has been fixed in version 1:7.4p1-10+deb9u4.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906236

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

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

https://www.debian.org/security/2018/dsa-4280

Plugin Details

Severity: Medium

ID: 112066

File Name: debian_DSA-4280.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2018/08/23

Modified: 2018/11/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

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

CVSS v3.0

Base Score: 5.3

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/08/22

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2018-15473

DSA: 4280