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CVE-2019-3857

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CVE-2019-3857

Published: Mar 25, 2019

Modified: Apr 23, 2025

PUBLISHED

CVSS v3.0

7.5

HIGH

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.

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

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