Debian DSA-4431-1 : libssh2 - security update

high Nessus Plugin ID 124039
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Synopsis

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

Description

Chris Coulson discovered several vulnerabilities in libssh2, a SSH2 client-side library, which could result in denial of service, information leaks or the execution of arbitrary code.

Solution

Upgrade the libssh2 packages.

For the stable distribution (stretch), these problems have been fixed in version 1.7.0-1+deb9u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924965

https://security-tracker.debian.org/tracker/source-package/libssh2

https://packages.debian.org/source/stretch/libssh2

https://www.debian.org/security/2019/dsa-4431

Plugin Details

Severity: High

ID: 124039

File Name: debian_DSA-4431.nasl

Version: 1.2

Type: local

Agent: unix

Published: 4/15/2019

Updated: 1/23/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-3855

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libssh2, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/13/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3858, CVE-2019-3859, CVE-2019-3860, CVE-2019-3861, CVE-2019-3862, CVE-2019-3863

DSA: 4431