CVE-2021-36367
Description
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).
Risk Information
Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score
Exploitation Probability
0.135
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2021-36367 are affected in PuTTY 0.75(x64) | Windows |
| Vulnerabilities CVE-2021-36367 are affected in PuTTY 0.75 | Windows |
| putty security update(DSA-5588-1) putty_0.74-1+deb11u1_amd64.deb | Linux |
| putty security update(DSA-5588-1) putty_0.78-2+deb12u1_amd64.deb | Linux |
| putty security update(DSA-5588-1) putty_0.74-1+deb11u1_i386.deb | Linux |
| putty security update(DSA-5588-1) putty_0.78-2+deb12u1_i386.deb | Linux |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-337646 | PuTTY (x64) (0.81) |
| PATCH-337645 | PuTTY (0.81) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234