QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2019-3863

Back to search

CVE-2019-3863

Published: Mar 25, 2019

Modified: Dec 19, 2025

PUBLISHED

CVSS v3.0

7.5

HIGH

Description

A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.

VendorProductVersions

The libssh2 Project

libssh2

affected
1.8.1

Weaknesses (CWE)

CWE-190
CWE-787

CVSS v3.0 Details

CVSS v3.0 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

RHSA-2019:0679
vendor-advisory
x_refsource_REDHAT
openSUSE-SU-2019:1075
vendor-advisory
x_refsource_SUSE
openSUSE-SU-2019:1109
vendor-advisory
x_refsource_SUSE
FEDORA-2019-3348cb4934
vendor-advisory
x_refsource_FEDORA
DSA-4431
vendor-advisory
x_refsource_DEBIAN
RHSA-2019:1175
vendor-advisory
x_refsource_REDHAT
RHSA-2019:1652
vendor-advisory
x_refsource_REDHAT
RHSA-2019:1791
vendor-advisory
x_refsource_REDHAT
RHSA-2019:1943
vendor-advisory
x_refsource_REDHAT
RHSA-2019:2399
vendor-advisory
x_refsource_REDHAT

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now