CVE Vulnerability

CVE-2020-14002

PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes Third Party Advisory
https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ Third Party Advisory
https://lists.tartarus.org/pipermail/putty-announce/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/ Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20200717-0003/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Information

Published : 2020-06-29 06:15

Updated : 2022-05-03 01:59

NVD link : CVE-2020-14002

Mitre link : CVE-2020-14002

Products Affected
No products.
CWE
CWE-203