Scientific Linux Security Update : openssh on SL6.x i386/x86_64 (20160321)

High Nessus Plugin ID 90080

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VPR Score: 4.2

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

It was discovered that the OpenSSH server did not sanitize data received in requests to enable X11 forwarding. An authenticated client with restricted SSH access could possibly use this flaw to bypass intended restrictions. (CVE-2016-3115)

It was discovered that the OpenSSH sshd daemon did not check the list of keyboard-interactive authentication methods for duplicates. A remote attacker could use this flaw to bypass the MaxAuthTries limit, making it easier to perform password guessing attacks. (CVE-2015-5600)

After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?343a2901

Plugin Details

Severity: High

ID: 90080

File Name: sl_20160321_openssh_on_SL6_x.nasl

Version: 2.5

Type: local

Agent: unix

Published: 2016/03/22

Updated: 2020/02/25

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 4.2

CVSS v2.0

Base Score: 8.5

Temporal Score: 6.7

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

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

CVSS v3.0

Base Score: 6.4

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:openssh, p-cpe:/a:fermilab:scientific_linux:openssh-askpass, p-cpe:/a:fermilab:scientific_linux:openssh-clients, p-cpe:/a:fermilab:scientific_linux:openssh-debuginfo, p-cpe:/a:fermilab:scientific_linux:openssh-ldap, p-cpe:/a:fermilab:scientific_linux:openssh-server, p-cpe:/a:fermilab:scientific_linux:pam_ssh_agent_auth, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/03/21

Vulnerability Publication Date: 2015/08/03

Reference Information

CVE: CVE-2015-5600, CVE-2016-3115