Vulnerability Name:

CVE-2016-2563 (CCN-111399)

Assigned:2016-03-06
Published:2016-03-06
Updated:2016-12-03
Summary:Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute arbitrary code via a crafted SCP-SINK file-size response to an SCP download request.
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)
8.6 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:U/RC:R)
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
7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:R)
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): Low
Integrity (I): Low
Availibility (A): Low
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
7.5 High (CCN 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
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-119
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2016-2563

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2016:1453

Source: CCN
Type: Full-Disclosure Mailing List, Sun, 6 Mar 2016 17:50:15 +0100
CVE-2016-2563 - PuTTY/PSCP <=0.66 buffer overflow - vuln-pscp-sink-sscanf

Source: FULLDISC
Type: UNKNOWN
20160309 CVE-2016-2563 - PuTTY/PSCP <=0.66 buffer overflow - vuln-pscp-sink-sscanf

Source: CCN
Type: PuTTY Web site
PuTTY

Source: CONFIRM
Type: Patch
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html

Source: BID
Type: UNKNOWN
84296

Source: SECTRACK
Type: UNKNOWN
1035257

Source: XF
Type: UNKNOWN
putty-pscp-cve20162563-bo(111399)

Source: MISC
Type: Vendor Advisory
https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563

Source: CCN
Type: Packet Storm Security [03-11-2016]
PuTTY / PSCP 0.66 Buffer Overflow

Source: GENTOO
Type: UNKNOWN
GLSA-201606-01

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [03-10-2016]

Vulnerable Configuration:Configuration 1:
  • cpe:/a:9bis:kitty:*:*:*:*:*:*:*:* (Version <= 0.66.6.3)
  • OR cpe:/a:simon_tatham:putty:*:*:*:*:*:*:*:* (Version <= 0.66)

  • Configuration CCN 1:
  • cpe:/a:putty:putty:0.66:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20162563
    V
    CVE-2016-2563
    2018-05-02
    oval:com.ubuntu.cosmic:def:201625630000000
    V
    CVE-2016-2563 on Ubuntu 18.10 (cosmic) - medium.
    2016-04-07
    oval:com.ubuntu.artful:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 17.10 (artful) - medium.
    2016-04-07
    oval:com.ubuntu.trusty:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-04-07
    oval:com.ubuntu.bionic:def:201625630000000
    V
    CVE-2016-2563 on Ubuntu 18.04 LTS (bionic) - medium.
    2016-04-07
    oval:com.ubuntu.bionic:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 18.04 LTS (bionic) - medium.
    2016-04-07
    oval:com.ubuntu.xenial:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-07
    oval:com.ubuntu.xenial:def:201625630000000
    V
    CVE-2016-2563 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-07
    oval:com.ubuntu.cosmic:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 18.10 (cosmic) - medium.
    2016-04-07
    oval:com.ubuntu.disco:def:201625630000000
    V
    CVE-2016-2563 on Ubuntu 19.04 (disco) - medium.
    2016-04-07
    oval:com.ubuntu.precise:def:20162563000
    V
    CVE-2016-2563 on Ubuntu 12.04 LTS (precise) - medium.
    2016-04-07
    BACK
    9bis kitty *
    simon_tatham putty *
    putty putty 0.66