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Ubuntu: (CVE-2021-36369): dropbear vulnerability

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Ubuntu: (CVE-2021-36369): dropbear vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/12/2022
Created
11/21/2024
Added
11/19/2024
Modified
11/19/2024

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.

Solution(s)

  • ubuntu-upgrade-dropbear

References

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