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Oracle Linux 7 : libssh2 (ELSA-2020-3915)

high Nessus Plugin ID 180979

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-3915 advisory.

 - fix integer overflow in SSH_MSG_DISCONNECT logic (CVE-2019-17498)
 - fix integer overflow in keyboard interactive handling that allows out-of-bounds writes (CVE-2019-3863)
 - fix out-of-bounds memory comparison with specially crafted message channel request (CVE-2019-3862)
 - fix out-of-bounds reads with specially crafted SSH packets (CVE-2019-3861)
 - fix zero-byte allocation in SFTP packet processing resulting in out-of-bounds read (CVE-2019-3858)
 - fix integer overflow in SSH packet processing channel resulting in out of bounds write (CVE-2019-3857)
 - fix integer overflow in keyboard interactive handling resulting in out of bounds write (CVE-2019-3856)
 - fix integer overflow in transport read resulting in out of bounds write (CVE-2019-3855)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected libssh2, libssh2-devel and / or libssh2-docs packages.

See Also

https://linux.oracle.com/errata/ELSA-2020-3915.html

Plugin Details

Severity: High

ID: 180979

File Name: oraclelinux_ELSA-2020-3915.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/7/2023

Updated: 11/1/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2019-17498

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:libssh2, p-cpe:/a:oracle:linux:libssh2-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:libssh2-docs

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/6/2020

Vulnerability Publication Date: 10/21/2019

Reference Information

CVE: CVE-2019-17498