Medium severity · published Jun 29, 2020
CVE-2020-14002
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation
5.9
CVSS
3.1%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
31; 32 · source: NVD
OU
Oncommand Unified Manager Core Package · Netapp
All versions, or not specified · source: NVD
PU
Putty · Putty
0.68 through 0.73 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-14002
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-14002
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/
Third Party Advisory
https://lists.tartarus.org/pipermail/putty-announce/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200717-0003/
Release Notes
https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
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