Vulnerability CVE-2019-9895

Vulnerability Name:

CVE-2019-9895 (CCN-158886)

Assigned:

2019-03-16

Published:

2019-03-16

Updated:

2019-04-05

Summary:

In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding.

CVSS v3 Severity:

9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

8.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

7.6 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-119

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2019-9895

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2019:1113

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2019:1123

Source: XF
Type: UNKNOWN
putty-cve20199895-bo(158886)

Source: FEDORA
Type: Mailing List, Release Notes, Third Party Advisory
FEDORA-2019-9e1a1cd634

Source: FEDORA
Type: Mailing List, Release Notes, Third Party Advisory
FEDORA-2019-5776dfe300

Source: BUGTRAQ
Type: UNKNOWN
20190403 [SECURITY] [DSA 4423-1] putty security update

Source: CONFIRM
Type: UNKNOWN
https://security.netapp.com/advisory/ntap-20190404-0001/

Source: CCN
Type: Chiark Web site
PuTTY Change Log

Source: MISC
Type: Third Party Advisory
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html

Source: DEBIAN
Type: UNKNOWN
DSA-4423

Vulnerable Configuration:

Configuration 1:

cpe:/a:putty:putty:*:*:*:*:*:*:*:* (Version < 0.71)

AND

cpe:/o:opengroup:unix:-:*:*:*:*:*:*:*

Configuration 2:

cpe:/o:fedoraproject:fedora:28:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:29:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:putty:putty:0.70:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:20199895	V	CVE-2019-9895	2021-10-24
oval:com.ubuntu.xenial:def:201998950000000	V	CVE-2019-9895 on Ubuntu 16.04 LTS (xenial) - untriaged.	2019-03-21
oval:com.ubuntu.bionic:def:20199895000	V	CVE-2019-9895 on Ubuntu 18.04 LTS (bionic) - untriaged.	2019-03-21
oval:com.ubuntu.disco:def:201998950000000	V	CVE-2019-9895 on Ubuntu 19.04 (disco) - untriaged.	2019-03-21
oval:com.ubuntu.cosmic:def:20199895000	V	CVE-2019-9895 on Ubuntu 18.10 (cosmic) - untriaged.	2019-03-21
oval:com.ubuntu.cosmic:def:201998950000000	V	CVE-2019-9895 on Ubuntu 18.10 (cosmic) - untriaged.	2019-03-21
oval:com.ubuntu.trusty:def:20199895000	V	CVE-2019-9895 on Ubuntu 14.04 LTS (trusty) - untriaged.	2019-03-21
oval:com.ubuntu.bionic:def:201998950000000	V	CVE-2019-9895 on Ubuntu 18.04 LTS (bionic) - untriaged.	2019-03-21
oval:com.ubuntu.xenial:def:20199895000	V	CVE-2019-9895 on Ubuntu 16.04 LTS (xenial) - untriaged.	2019-03-21

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