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Scientific Linux Security Update : libssh2 on SL6.x, SL7.x i386/x86_64 (20160310)

medium Nessus Plugin ID 89863

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Synopsis

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

Description

A type confusion issue was found in the way libssh2 generated ephemeral secrets for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use significantly less secure random parameters. (CVE-2016-0787)

After installing these updated packages, all running applications using libssh2 must be restarted for this update to take effect.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?eae86def

Plugin Details

Severity: Medium

ID: 89863

File Name: sl_20160310_libssh2_on_SL6_x.nasl

Version: 2.6

Type: local

Agent: unix

Published: 3/11/2016

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:libssh2, p-cpe:/a:fermilab:scientific_linux:libssh2-debuginfo, p-cpe:/a:fermilab:scientific_linux:libssh2-devel, p-cpe:/a:fermilab:scientific_linux:libssh2-docs, x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 3/10/2016

Vulnerability Publication Date: 4/13/2016

Reference Information

CVE: CVE-2016-0787