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CentOS 7 : libssh2 (CESA-2019:2136)

critical Nessus Plugin ID 128360

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

An update for libssh2 is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The libssh2 packages provide a library that implements the SSH2 protocol.

The following packages have been upgraded to a later upstream version:
libssh2 (1.8.0). (BZ#1592784)

Security Fix(es) :

* libssh2: Zero-byte allocation with a specially crafted SFTP packed leading to an out-of-bounds read (CVE-2019-3858)

* libssh2: Out-of-bounds reads with specially crafted SSH packets (CVE-2019-3861)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Solution

Update the affected libssh2 packages.

See Also

http://www.nessus.org/u?27db0161

Plugin Details

Severity: Critical

ID: 128360

File Name: centos_RHSA-2019-2136.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/30/2019

Updated: 4/30/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2019-3861

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:libssh2-devel, p-cpe:/a:centos:centos:libssh2, p-cpe:/a:centos:centos:libssh2-docs

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/29/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2019-3858, CVE-2019-3861

RHSA: 2019:2136