CVE-2019-3857

HIGH

libssh2 < 1.8.1 - Remote Code Execution via SSH_MSG_CHANNEL_REQUEST Packet Parsing

Title source: llm
STIX 2.1

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 SSH_MSG_CHANNEL_REQUEST packets with an exit signal 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.

References (16)

Core 16
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3857
Patch, Vendor Advisory x_refsource_misc
https://www.libssh2.org/CVE-2019-3857.html
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190327-0005/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0679
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4431
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Apr/25
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1175
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1652
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1791
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1943
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2399

Scores

CVSS v3 8.8
EPSS 0.0454
EPSS Percentile 89.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-190 CWE-787
Status published
Products (16)
debian/debian_linux 8.0
debian/debian_linux 9.0
fedoraproject/fedora 28
libssh2/libssh2 1.2.8 - 1.8.0
netapp/ontap_select_deploy_administration_utility
opensuse/leap 15.0
opensuse/leap 42.3
oracle/peoplesoft_enterprise_peopletools 8.56
oracle/peoplesoft_enterprise_peopletools 8.57
redhat/enterprise_linux 8.0
... and 6 more
Published Mar 25, 2019
Tracked Since Feb 18, 2026