Описание
fail2ban is a daemon to ban hosts that cause multiple authentication errors. In versions 0.9.7 and prior, 0.10.0 through 0.10.6, and 0.11.0 through 0.11.2, there is a vulnerability that leads to possible remote code execution in the mailing action mail-whois. Command mail from mailutils package used in mail actions like mail-whois can execute command if unescaped sequences (\n~) are available in "foreign" input (for instance in whois output). To exploit the vulnerability, an attacker would need to insert malicious characters into the response sent by the whois server, either via a MITM attack or by taking over a whois server. The issue is patched in versions 0.10.7 and 0.11.3. As a workaround, one may avoid the usage of action mail-whois or patch the vulnerability manually.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needed |
| devel | not-affected | 0.11.2-2 |
| esm-apps/bionic | released | 0.10.2-2ubuntu0.1~esm1 |
| esm-apps/focal | released | 0.11.1-1ubuntu0.1~esm1 |
| esm-apps/jammy | not-affected | 0.11.2-2 |
| esm-apps/noble | not-affected | 0.11.2-2 |
| esm-apps/xenial | released | 0.9.3-1ubuntu0.1~esm1 |
| esm-infra-legacy/trusty | released | 0.8.11-1ubuntu0.1~esm1 |
| focal | ignored | end of standard support, was needed |
| groovy | ignored | end of life |
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Ссылки на источники
EPSS
6.8 Medium
CVSS2
6.1 Medium
CVSS3
Связанные уязвимости
fail2ban is a daemon to ban hosts that cause multiple authentication errors. In versions 0.9.7 and prior, 0.10.0 through 0.10.6, and 0.11.0 through 0.11.2, there is a vulnerability that leads to possible remote code execution in the mailing action mail-whois. Command `mail` from mailutils package used in mail actions like `mail-whois` can execute command if unescaped sequences (`\n~`) are available in "foreign" input (for instance in whois output). To exploit the vulnerability, an attacker would need to insert malicious characters into the response sent by the whois server, either via a MITM attack or by taking over a whois server. The issue is patched in versions 0.10.7 and 0.11.3. As a workaround, one may avoid the usage of action `mail-whois` or patch the vulnerability manually.
fail2ban is a daemon to ban hosts that cause multiple authentication e ...
Уязвимость программного обеспечения fail2ban, связанная с ошибками проверки функции, позволяющая нарушителю выполнить произвольный код
EPSS
6.8 Medium
CVSS2
6.1 Medium
CVSS3