You are viewing this page in an unauthorized frame window.
This is a potential security issue, you are being redirected to
https://nvd.nist.gov
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
The client side in OpenSSH 5.7 through 8.4 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). NOTE: some reports state that 8.5 and 8.6 are also affected.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected].
OR
*cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 8.4
*cpe:2.3:a:openbsd:openssh:8.4:-:*:*:*:*:*:*
OR
*cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 8.4
*cpe:2.3:a:openbsd:openssh:8.4:-:*:*:*:*:*:*
*cpe:2.3:a:openbsd:openssh:8.5:-:*:*:*:*:*:*
*cpe:2.3:a:openbsd:openssh:8.6:-:*:*:*:*:*:*
CVE Modified by MITRE5/24/2021 1:15:08 AM
Action
Type
Old Value
New Value
Changed
Description
The client side in OpenSSH 5.7 through 8.4 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).
The client side in OpenSSH 5.7 through 8.4 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). NOTE: some reports state that 8.5 and 8.6 are also affected.
Modified Analysis by NIST2/25/2021 10:18:56 AM
Action
Type
Old Value
New Value
Changed
Reference Type
https://docs.ssh-mitm.at/CVE-2020-14145.html No Types Assigned
https://docs.ssh-mitm.at/CVE-2020-14145.html Third Party Advisory
Changed
Reference Type
https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py No Types Assigned
https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py Third Party Advisory
CVE Modified by MITRE2/12/2021 3:15:13 PM
Action
Type
Old Value
New Value
Changed
Description
The client side in OpenSSH 5.7 through 8.3 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).
The client side in OpenSSH 5.7 through 8.4 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).
OR
*cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (including) 8.3
Changed
Reference Type
https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 No Types Assigned
https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 Patch, Third Party Advisory
Changed
Reference Type
https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ No Types Assigned
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
Quick Info
CVE Dictionary Entry: CVE-2020-14145 NVD
Published Date: 06/29/2020 NVD
Last Modified: 11/21/2024
Source: MITRE