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openSUSE Security Update : putty (openSUSE-2019-1113)

critical Nessus Plugin ID 123660

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Synopsis

The remote openSUSE host is missing a security update.

Description

This update for putty fixes the following issues :

Update to new upstream release 0.71 [boo#1129633]

 - CVE-2019-9894: Fixed a remotely triggerable memory overwrite in RSA key exchange, which can occur before host key verification potential recycling of random numbers used in cryptography.

 - CVE-2019-9895: Fixed a remotely triggerable buffer overflow in any kind of server-to-client forwarding.

 - CVE-2019-9897: Fixed multiple denial-of-service attacks that can be triggered by writing to the terminal.

 - CVE-2019-9898: Fixed potential recycling of random numbers used in cryptography

 - CVE-2019-9896 (Windows only): Fixed hijacking by a malicious help file in the same directory as the executable

 - Major rewrite of the crypto code to remove cache and timing side channels.

Solution

Update the affected putty packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1129633

Plugin Details

Severity: Critical

ID: 123660

File Name: openSUSE-2019-1113.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/3/2019

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, 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 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: p-cpe:/a:novell:opensuse:putty, p-cpe:/a:novell:opensuse:putty-debuginfo, p-cpe:/a:novell:opensuse:putty-debugsource, cpe:/o:novell:opensuse:15.0

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 4/2/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

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