PuTTY through 0.75 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).
Published 2021-07-09 21:15:09
Updated 2024-07-03 01:36:54
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2021-36367

Exploit prediction scoring system (EPSS) score for CVE-2021-36367

0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-36367

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.8
MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
NIST
8.1
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
2.8
5.2
134c704f-9b21-4f2e-91b3-4a467353bcc0 2024-07-03
8.1
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
2.8
5.2
NIST

CWE ids for CVE-2021-36367

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