vulnerability
Arch Linux: Content spoofing (CVE-2021-36367)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Jul 9, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Jul 9, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
PuTTY before version 0.76 proceeds with establishing an SSH session even if it has never sent a substantive authentication response. This makes it easier for an attacker-controlled SSH server to present a later spoofed authentication prompt (that the attacker can use to capture credential data, and use that data for purposes that are undesired by the client user).
Solution
arch-linux-upgrade-latest
References
- CVE-2021-36367
- https://attackerkb.com/topics/CVE-2021-36367
- URL-https://git.tartarus.org/?p=simon/putty.git%3Ba=commit%3Bh=1dc5659aa62848f0aeb5de7bd3839fecc7debefa
- URL-https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
- URL-https://security.archlinux.org/ASA-202107-37
- URL-https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
- URL-https://www.debian.org/security/2023/dsa-5588
- CWE-345
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.