PuTTY < 0.64 Multiple Information Disclosure Vulnerabilities

medium Nessus Plugin ID 81669

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Synopsis

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

Description

The remote host has a version of PuTTY installed that is prior to 0.64. It is, therefore, affected by multiple vulnerabilities :

- An information disclosure vulnerability exists due to a failure to clear SSH-2 private key information from the memory during the saving or loading of key files to disk. A local attacker can exploit this to disclose potentially sensitive information. (CVE-2015-2157)

- An information disclose vulnerability exists in the Diffie-Hellman Key Exchange due to a failure to properly handle 0 value keys sent by the server. A man-in-the-middle attacker can exploit this to disclose potentially sensitive information.

Solution

Upgrade to PuTTY version 0.64 or later.

Plugin Details

Severity: Medium

ID: 81669

File Name: putty_064.nasl

Version: 1.10

Type: local

Agent: windows

Family: Windows

Published: 3/6/2015

Updated: 3/30/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2015-2157

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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: 2/28/2015

Vulnerability Publication Date: 2/28/2015

Reference Information

CVE: CVE-2015-2157

BID: 72825

Detections

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