Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needs-triage |
| devel | released | 2020.81-3+deb11u1 |
| esm-apps-legacy/xenial | needed | |
| esm-apps/bionic | released | 2017.75-3ubuntu0.1~esm1 |
| esm-apps/focal | released | 2019.78-2ubuntu0.1~esm1 |
| esm-apps/jammy | released | 2020.81-5ubuntu0.1 |
| esm-apps/noble | released | 2020.81-3+deb11u1 |
| esm-apps/resolute | released | 2020.81-3+deb11u1 |
| esm-apps/xenial | ignored | end of ESM support, was needed |
| focal | ignored | end of standard support, was needed |
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EPSS
7.5 High
CVSS3
Связанные уязвимости
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.
An issue was discovered in Dropbear through 2020.81. Due to a non-RFC- ...
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.
Уязвимость компонента Non-RFC-compliant Check пакета программ для организации сеансов связи по протоколу SSH Dropbear, позволяющая нарушителю обойти существующие ограничения безопасности
EPSS
7.5 High
CVSS3