Vulnerability Name:

CVE-2019-9896 (CCN-158887)

Assigned:2019-03-16
Published:2019-03-16
Updated:2022-04-05
Summary:In PuTTY versions before 0.71 on Windows, local attackers could hijack the application by putting a malicious help file in the same directory as the executable.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-427
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2019-9896

Source: SUSE
Type: Mailing List, Third Party Advisory
openSUSE-SU-2019:1113

Source: SUSE
Type: Mailing List, Third Party Advisory
openSUSE-SU-2019:1123

Source: XF
Type: UNKNOWN
putty-cve20199896-sec-bypass(158887)

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0001/

Source: CCN
Type: Chiark Web site
PuTTY Change Log

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

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-9896

Vulnerable Configuration:Configuration 1:
  • cpe:/a:putty:putty:*:*:*:*:*:*:*:* (Version < 0.71)
  • AND
  • cpe:/o:microsoft:windows:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:opensuse:backports_sle:15.0:-:*:*:*:*:*:*
  • OR cpe:/o:opensuse:leap:15.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:putty:putty:0.70:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20199896
    V
    		CVE-2019-9896
    2021-10-24
    oval:com.ubuntu.xenial:def:201998960000000
    V
    		CVE-2019-9896 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-03-21
    oval:com.ubuntu.bionic:def:20199896000
    V
    		CVE-2019-9896 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2019-03-21
    oval:com.ubuntu.cosmic:def:20199896000
    V
    		CVE-2019-9896 on Ubuntu 18.10 (cosmic) - untriaged.
    2019-03-21
    oval:com.ubuntu.cosmic:def:201998960000000
    V
    		CVE-2019-9896 on Ubuntu 18.10 (cosmic) - medium.
    2019-03-21
    oval:com.ubuntu.trusty:def:20199896000
    V
    		CVE-2019-9896 on Ubuntu 14.04 LTS (trusty) - untriaged.
    2019-03-21
    oval:com.ubuntu.bionic:def:201998960000000
    V
    		CVE-2019-9896 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-03-21
    oval:com.ubuntu.xenial:def:20199896000
    V
    		CVE-2019-9896 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2019-03-21
    BACK
    putty putty *
    microsoft windows -
    opensuse backports sle 15.0 -
    opensuse leap 15.0
    putty putty 0.70