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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-36369 Detail

Description

An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/mkj/dropbear/pull/128 Third Party Advisory 
https://github.com/mkj/dropbear/pull/128 Third Party Advisory 
https://github.com/mkj/dropbear/releases Release Notes  Third Party Advisory 
https://github.com/mkj/dropbear/releases Release Notes  Third Party Advisory 
https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82 Release Notes  Third Party Advisory 
https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82 Release Notes  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/11/msg00015.html Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-287 Improper Authentication cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-36369
NVD Published Date:
10/12/2022
NVD Last Modified:
11/21/2024
Source:
MITRE