PT-2019-3586 · Libssh2+5 · Libssh2+5

Chris Coulson · Published 2019-03-18 · Updated 2024-06-15 · CVE-2019-3863

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.8.1

Description A flaw in libssh2 allows a server to send multiple keyboard interactive response messages with a total length greater than the maximum unsigned char characters. This can cause an out of bounds memory write error. The issue is related to a buffer overflow in memory, which can be exploited by a remote attacker to cause a denial of service, execute arbitrary code, or disclose sensitive information.

Recommendations For versions prior to 1.8.1, update to version 1.8.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the libssh2 library until a patch is applied.

Fix

Integer Overflow

Memory Corruption

Weakness Enumeration

CWE-190

CWE-787

Related Identifiers

ALT-PU-2019-1501

BDU:2019-03795

CESA-2019_0679

CESA-2019_1175

CESA-2019_1652

CVE-2019-3863

DLA-1730-1

DSA-4431-1

MGASA-2019-0139

OPENSUSE-SU-2019:1109-1

OPENSUSE-SU-2019_1075-1

OPENSUSE-SU-2019_1109-1

OPENSUSE-SU-2020:2126-1

OPENSUSE-SU-2020:2129-1

OPENSUSE-SU-2020_2126-1

OPENSUSE-SU-2020_2129-1

OPENSUSE-SU-2024:10999-1

RHSA-2019:0679

RHSA-2019:1175

RHSA-2019:1652

RHSA-2019:1791

RHSA-2019:1943

RHSA-2019:2399

RHSA-2019_0679

RHSA-2019_1175

RHSA-2019_1652

SUSE-SU-2019:0655-1

SUSE-SU-2019:13982-1

SUSE-SU-2019:13997-1

SUSE-SU-2020:3551-1

USN-5308-1

Affected Products

Alt Linux

Centos

Red Hat

Suse

Ubuntu

Libssh2

References · 88

• https://osv.dev/vulnerability/openSUSE-SU-2024:10999-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0139 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:1943 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:13997-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-13115 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:2129-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:13982-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3860 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-17498 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-3863 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:1652 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2019-3863 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html · Vendor Advisory
• https://debian.org/security/2019/dsa-4431 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3863 · Vendor Advisory