Debian DSA-3182-1 : libssh2 - security update

medium Nessus Plugin ID 81760

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Synopsis

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

Description

Mariusz Ziulek reported that libssh2, a SSH2 client-side library, was reading and using the SSH_MSG_KEXINIT packet without doing sufficient range checks when negotiating a new SSH session with a remote server.
A malicious attacker could man in the middle a real server and cause a client using the libssh2 library to crash (denial of service) or otherwise read and use unintended memory areas in this process.

Solution

Upgrade the libssh2 packages.

For the stable distribution (wheezy), this problem has been fixed in version 1.4.2-1.1+deb7u1.

Plugin Details

Severity: Medium

ID: 81760

File Name: debian_DSA-3182.nasl

Version: 1.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/12/2015

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libssh2, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2015

Reference Information

CVE: CVE-2015-1782

DSA: 3182

Detections

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