high7.5
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 a…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Putty | Putty | before 0.75 |
References
- NVD record
- CVE.org record
- https://docs.ssh-mitm.at/puttydos.html
- https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
- https://docs.ssh-mitm.at/puttydos.html
- https://github.com/ssh-mitm/ssh-mitm-plugins/blob/main/ssh_mitm_plugins/ssh/putty_dos.py
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html