Vulnerability Name:

CVE-2019-9897 (CCN-158888)

Assigned:2019-03-16
Published:2019-03-16
Updated:2021-07-21
Summary:Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
3.7 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.2 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/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): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
2.6 Low (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-9897

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-cve20199897-dos(158888)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20190424 [SECURITY] [DLA 1763-1] putty security update

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: Mailing List, Third Party Advisory
20190403 [SECURITY] [DSA 4423-1] putty security update

Source: CONFIRM
Type: Patch, Third Party Advisory
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: Third Party Advisory
DSA-4423

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-9897

Vulnerable Configuration:Configuration 1:
  • cpe:/a:putty:putty:*:*:*:*:*:*:*:* (Version < 0.71)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:28:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:29:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:netapp:oncommand_unified_manager:-:*:*:*:*:*:*:*

    • Configuration 5:
  • 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:20199897
    V
    		CVE-2019-9897
    2021-10-24
    oval:com.ubuntu.xenial:def:201998970000000
    V
    		CVE-2019-9897 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2019-03-21
    oval:com.ubuntu.bionic:def:20199897000
    V
    		CVE-2019-9897 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2019-03-21
    oval:com.ubuntu.disco:def:201998970000000
    V
    		CVE-2019-9897 on Ubuntu 19.04 (disco) - untriaged.
    2019-03-21
    oval:com.ubuntu.cosmic:def:20199897000
    V
    		CVE-2019-9897 on Ubuntu 18.10 (cosmic) - untriaged.
    2019-03-21
    oval:com.ubuntu.cosmic:def:201998970000000
    V
    		CVE-2019-9897 on Ubuntu 18.10 (cosmic) - untriaged.
    2019-03-21
    oval:com.ubuntu.trusty:def:20199897000
    V
    		CVE-2019-9897 on Ubuntu 14.04 LTS (trusty) - untriaged.
    2019-03-21
    oval:com.ubuntu.bionic:def:201998970000000
    V
    		CVE-2019-9897 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2019-03-21
    oval:com.ubuntu.xenial:def:20199897000
    V
    		CVE-2019-9897 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2019-03-21
    BACK
    putty putty *
    fedoraproject fedora 28
    fedoraproject fedora 29
    debian debian linux 9.0
    debian debian linux 8.0
    netapp oncommand unified manager -
    opensuse leap 15.0
    putty putty 0.70