PuTTY < 0.71 Multiple Vulnerabilities

critical Nessus Plugin ID 123418

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Synopsis

The remote Windows host has an SSH client that is affected by multiple vulnerabilities.

Description

The remote host has a version of PuTTY installed that is prior to 0.71. It is, therefore, affected by multiple vulnerabilities including:

- A remotely triggerable buffer overflow in any kind of server-to-client forwarding. (CVE-2019-9895)

- Potential recycling of random numbers used in cryptography.
(CVE-2019-9898)

- A remotely triggerable memory overwrite in RSA key exchange can occur before host key verification. (CVE-2019-9894)

Solution

Upgrade to PuTTY version 0.71 or later.

Plugin Details

Severity: Critical

ID: 123418

File Name: putty_071.nasl

Version: 1.2

Type: local

Agent: windows

Family: Windows

Published: 3/27/2019

Updated: 10/30/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2019-9895

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/a:simon_tatham:putty

Required KB Items: installed_sw/PuTTY, SMB/Registry/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2019

Vulnerability Publication Date: 3/16/2019

Reference Information

CVE: CVE-2019-9894, CVE-2019-9895, CVE-2019-9896, CVE-2019-9897, CVE-2019-9898

BID: 107484, 107523

Detections

Analytics