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Mageia: 2020-0358 Critical: PuTTY Information Leak Security Issue

mageia
Calendar Grey September 2, 2020
Dist Mageia Esm H88
New fix for PuTTY addresses security flaw leading to information exposure. Explore details on Mageia 2020-0358 and the implications for its users.
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation

Summary

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) (CVE-2020-14002).

References

- https://bugs.mageia.org/show_bug.cgi?id=26875

- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/

- https://www.cve.org/CVERecord?id=CVE-2020-14002

Topics%20covered

Topics Covered

security advisory information leak software update man-in-the-middle PuTTY Mageia

Resolution

SRPMS

- 7/core/putty-0.74-1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 02 Sep 2020
URL: https://advisories.mageia.org/MGASA-2020-0358.html
Type: security
CVE: CVE-2020-14002

Topics%20covered

Topics Covered

security advisory information leak software update man-in-the-middle PuTTY Mageia

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