CVE-2021-33500

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-33500
PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other platforms for similar reasons.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://docs.ssh-mitm.at/puttydos.html Exploit Third Party Advisory
https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py Exploit Third Party Advisory
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes Third Party Advisory
https://docs.ssh-mitm.at/puttydos.html Exploit Third Party Advisory
https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py Exploit Third Party Advisory
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes Third Party Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
History

21 Nov 2024, 06:08

Type Values Removed Values Added
References () https://docs.ssh-mitm.at/puttydos.html - Exploit, Third Party Advisory () https://docs.ssh-mitm.at/puttydos.html - Exploit, Third Party Advisory
References () https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py - Exploit, Third Party Advisory () https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py - Exploit, Third Party Advisory
References () https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - Release Notes, Third Party Advisory () https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - Release Notes, Third Party Advisory

27 May 2021, 21:30

Type Values Removed Values Added
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
References (MISC) https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py - (MISC) https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py - Exploit, Third Party Advisory
References (MISC) https://docs.ssh-mitm.at/puttydos.html - (MISC) https://docs.ssh-mitm.at/puttydos.html - Exploit, Third Party Advisory
References (MISC) https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - (MISC) https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - Release Notes, Third Party Advisory

21 May 2021, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-05-21 20:15

Updated : 2024-11-21 06:08

NVD link : CVE-2021-33500

Mitre link : CVE-2021-33500

CVE.ORG link : CVE-2021-33500

JSON object : View

Products Affected

putty

  • putty

microsoft

  • windows
CWE
NVD-CWE-noinfo