CVE-2021-36367

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-36367
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).

8.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://git.tartarus.org/?p=simon/putty.git%3Ba=commit%3Bh=1dc5659aa62848f0aeb5de7bd3839fecc7debefa
https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes Third Party Advisory
https://www.debian.org/security/2023/dsa-5588
Configurations

Configuration 1 (hide)

cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
History

25 Apr 2024, 22:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html -

24 Dec 2023, 18:15

Type Values Removed Values Added
References
  • () https://www.debian.org/security/2023/dsa-5588 -

07 Nov 2023, 03:36

Type Values Removed Values Added
References
  • {'url': 'https://git.tartarus.org/?p=simon/putty.git;a=commit;h=1dc5659aa62848f0aeb5de7bd3839fecc7debefa', 'name': 'https://git.tartarus.org/?p=simon/putty.git;a=commit;h=1dc5659aa62848f0aeb5de7bd3839fecc7debefa', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory'], 'refsource': 'MISC'}
  • () https://git.tartarus.org/?p=simon/putty.git%3Ba=commit%3Bh=1dc5659aa62848f0aeb5de7bd3839fecc7debefa -

14 Jul 2021, 14:26

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 5.8
v3 : 8.1
CPE cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
References (MISC) https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - (MISC) https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html - Release Notes, Third Party Advisory
References (MISC) https://git.tartarus.org/?p=simon/putty.git;a=commit;h=1dc5659aa62848f0aeb5de7bd3839fecc7debefa - (MISC) https://git.tartarus.org/?p=simon/putty.git;a=commit;h=1dc5659aa62848f0aeb5de7bd3839fecc7debefa - Mailing List, Patch, Third Party Advisory
CWE CWE-345

09 Jul 2021, 21:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-07-09 21:15

Updated : 2024-04-25 22:15

NVD link : CVE-2021-36367

Mitre link : CVE-2021-36367

CVE.ORG link : CVE-2021-36367

JSON object : View

Products Affected

putty

  • putty
CWE
CWE-345

Insufficient Verification of Data Authenticity