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cve[email protected]CVE-2020-14002
HistoryJun 29, 2020 - 6:15 p.m.

CVE-2020-14002

2020-06-2918:15:11
CWE-203
[email protected]
web.nvd.nist.gov
111
3
putty
cve-2020-14002
security
info leak
algorithm negotiation
vulnerability
nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.5 Medium

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

71.7%

JSON

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).

Affected configurations

NVD
Node
puttyputtyRange0.68–0.73
Node
netapponcommand_unified_manager_core_packageMatch-
Node
fedoraprojectfedoraMatch31
OR
fedoraprojectfedoraMatch32
CPENameOperatorVersion
putty:puttyputtyle0.73

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4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.5 Medium

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

71.7%

JSON
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