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GLSA-202011-05 : libssh: Denial of service

medium Nessus Plugin ID 142241

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-202011-05 (libssh: Denial of service)

 libssh was found to have a NULL pointer dereference in tftpserver.c if the function ssh_buffer_new returns NULL.
 Impact :

 An attacker could cause a possible Denial of Service condition.
 Workaround :

 There is no known workaround at this time.

Solution

All libssh users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-libs/libssh-0.9.5'

See Also

https://security.gentoo.org/glsa/202011-05

Plugin Details

Severity: Medium

ID: 142241

File Name: gentoo_GLSA-202011-05.nasl

Version: 1.4

Type: local

Published: 11/3/2020

Updated: 2/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-16135

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libssh, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/3/2020

Vulnerability Publication Date: 7/29/2020

Reference Information

CVE: CVE-2020-16135

GLSA: 202011-05