Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2019-3859

critical Nessus Plugin ID 222889

Language:

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and
 _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory. (CVE-2019-3859)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2019-3859

https://ubuntu.com/security/CVE-2019-3859

Plugin Details

Severity: Critical

ID: 222889

File Name: unpatched_CVE_2019_3859.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 8/20/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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-2019-3859

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: p-cpe:/a:centos:centos:libssh2-docs, cpe:/o:centos:centos:8, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:libssh2, p-cpe:/a:redhat:enterprise_linux:libssh2-devel, p-cpe:/a:redhat:enterprise_linux:libssh2-docs, p-cpe:/a:redhat:enterprise_linux:libssh2, cpe:/o:redhat:enterprise_linux:7, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libssh2, p-cpe:/a:centos:centos:libssh2-devel, cpe:/o:redhat:enterprise_linux:8, cpe:/a:redhat:advanced_virtualization:8::el8, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/18/2019

Reference Information

CVE: CVE-2019-3859