Information Leak Vulnerability in PuTTY by Simon Tatham
CVE-2020-14002

5.9MEDIUM

Key Information:

Vendor

Putty

Status
Putty
Vendor
CVE Published:
29 June 2020

What is CVE-2020-14002?

An information leak vulnerability exists in PuTTY versions 0.68 through 0.73 due to an observable discrepancy in the algorithm negotiation process. This weakness allows man-in-the-middle attackers to exploit initial connection attempts when the client has not yet cached a host key for the server. As a result, sensitive information may be exposed during the SSH setup, highlighting the importance of updating to secure versions.

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References

https://www.chiark.greenend.org.uk/~sgtatham/putty/change...
https://lists.tartarus.org/pipermail/putty-announce/
https://www.fzi.de/en/news/news/detail-en/artikel/fsa-202...

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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