8.8
HIGH
CVE-2019-3856
Libssh2 Remote Code Execution Through Integer Overflow
Description

An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

INFO

Published Date :

March 25, 2019, 7:29 p.m.

Last Modified :

Nov. 7, 2023, 3:10 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2019-3856 has a 6 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2019-3856 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
2 Redhat enterprise_linux_desktop
3 Redhat enterprise_linux_server
4 Redhat enterprise_linux_workstation
5 Redhat enterprise_linux_server_aus
6 Redhat enterprise_linux_server_eus
7 Redhat enterprise_linux_server_tus
1 Fedoraproject fedora
1 Debian debian_linux
1 Opensuse leap
1 Netapp ontap_select_deploy_administration_utility
1 Oracle peoplesoft_enterprise_peopletools
1 Libssh2 libssh2
: Total Affected Vendor : 7 | Products : 13
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-3856.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0679 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1175 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1652 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1791 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1943 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2399 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856 Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
https://seclists.org/bugtraq/2019/Apr/25 Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20190327-0005/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4431 Third Party Advisory
https://www.libssh2.org/CVE-2019-3856.html Patch Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
Mohzeela/external-secret

None

Updated: 2 years, 3 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 3, 2022, 7:11 p.m. This repo has been linked 61 different CVEs too.
Profile Photo
umahari/security

None

Dockerfile Makefile Shell Go Smarty Open Policy Agent Mustache

Updated: 3 years, 8 months ago
0 stars 1 fork 1 watcher
Born at : Feb. 25, 2021, 9:59 a.m. This repo has been linked 61 different CVEs too.
Profile Photo
siddharthraopotukuchi/trivy

None

Dockerfile Makefile

Updated: 2 years, 2 months ago
1 stars 0 fork 0 watcher
Born at : Dec. 15, 2020, 7:02 p.m. This repo has been linked 61 different CVEs too.
Profile Photo
t31m0/Vulnerability-Scanner-for-Containers

None

Dockerfile Makefile Shell Go Smarty Open Policy Agent

Updated: 4 months, 3 weeks ago
2 stars 0 fork 0 watcher
Born at : Sept. 21, 2020, 7:37 a.m. This repo has been linked 61 different CVEs too.
Profile Photo
simiyo/trivy

None

Dockerfile Makefile Shell Go Smarty

Updated: 4 years, 5 months ago
0 stars 0 fork 0 watcher
Born at : June 6, 2020, 2:22 a.m. This repo has been linked 54 different CVEs too.
Profile Photo
KorayAgaya/TrivyWeb

A Simple and Comprehensive Vulnerability Scanner for Containers, Suitable for CI for Web

Python HTML CSS JavaScript

Updated: 3 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 2, 2019, 8:26 a.m. This repo has been linked 51 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-3856 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-3856 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
  • Modified Analysis by [email protected]

    Oct. 15, 2020

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:1175 No Types Assigned https://access.redhat.com/errata/RHSA-2019:1175 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:1652 No Types Assigned https://access.redhat.com/errata/RHSA-2019:1652 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:1791 No Types Assigned https://access.redhat.com/errata/RHSA-2019:1791 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:1943 No Types Assigned https://access.redhat.com/errata/RHSA-2019:1943 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:2399 No Types Assigned https://access.redhat.com/errata/RHSA-2019:2399 Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ Mailing List, Third Party Advisory
    Changed Reference Type https://seclists.org/bugtraq/2019/Apr/25 No Types Assigned https://seclists.org/bugtraq/2019/Apr/25 Mailing List, Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2019/dsa-4431 No Types Assigned https://www.debian.org/security/2019/dsa-4431 Third Party Advisory
    Changed Reference Type https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html No Types Assigned https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory
    Added CWE NIST CWE-787
    Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 15, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:redhat:virtualization:4.0:*:*:*:*:*:*:* OR *cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 16, 2019

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Red Hat, Inc. AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE Red Hat, Inc. CWE-190
    Added CWE Red Hat, Inc. CWE-787
  • CVE Modified by [email protected]

    Aug. 07, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:2399 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 30, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1943 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 16, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1791 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 02, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1652 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 14, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1175 [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 15, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4431 [No Types Assigned]
    Added Reference https://seclists.org/bugtraq/2019/Apr/25 [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 05, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Apr. 02, 2019

    Action Type Old Value New Value
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html Mailing List, Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:0679 No Types Assigned https://access.redhat.com/errata/RHSA-2019:0679 Third Party Advisory
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 02, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 28, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 28, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:0679 [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 28, 2019

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20190327-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20190327-0005/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 27, 2019

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20190327-0005/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 26, 2019

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://www.libssh2.org/CVE-2019-3856.html No Types Assigned https://www.libssh2.org/CVE-2019-3856.html Patch, Vendor Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html Third Party Advisory
    Added CWE CWE-190
    Added CPE Configuration OR *cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.1
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 26, 2019

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-3856 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-3856 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.26 }} -0.07%

score

0.65796

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: