DEBIAN-CVE-2021-36367

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Source
https://security-tracker.debian.org/tracker/CVE-2021-36367
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-36367.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-36367
Upstream
Published
2021-07-09T21:15:08.540Z
Modified
2025-11-17T04:22:58.893391Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

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).

References

Affected packages

Debian:11 / putty

Package

Name
putty
Purl
pkg:deb/debian/putty?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.74-1+deb11u1

Affected versions

0.*

0.74-1
0.74-1+deb11u1~deb10u1
0.74-1+deb11u1~deb10u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / putty

Package

Name
putty
Purl
pkg:deb/debian/putty?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.75-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / putty

Package

Name
putty
Purl
pkg:deb/debian/putty?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.75-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / putty

Package

Name
putty
Purl
pkg:deb/debian/putty?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.75-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}