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CVE-2021-33500

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/21/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:windowsputty:putty

References

https://docs.ssh-mitm.at/puttydos.html(cve@mitre.org)

https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py(cve@mitre.org)

https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html(cve@mitre.org)

https://docs.ssh-mitm.at/puttydos.html(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py(af854a3a-2127-422b-91ae-364da2661108)

https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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