Описание
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parser#handle_mime_head parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated String#index searches combined with String#slice! prefix deletion. For escape-heavy quoted values, this causes super-linear processing. An unauthenticated attacker can send a crafted multipart/form-data request containing many parts with long backslash-escaped parameter values to trigger excessive CPU usage during multipart parsing. This results in a denial of service condition in Rack applications that accept multipart form data. This issue has been patched in versions 3.1.21 and 3.2.6.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needed | |
| esm-apps-legacy/xenial | ignored | changes too intrusive |
| esm-apps/bionic | ignored | changes too intrusive |
| esm-apps/focal | ignored | changes too intrusive |
| esm-apps/jammy | ignored | changes too intrusive |
| esm-apps/xenial | ignored | end of ESM support, was ignored [changes too intrusive] |
| esm-infra-legacy/trusty | ignored | changes too intrusive |
| jammy | ignored | changes too intrusive |
| noble | ignored | changes too intrusive |
| questing | released | 3.1.16-0.1ubuntu0.3 |
Показывать по
EPSS
7.5 High
CVSS3
Связанные уязвимости
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parser#handle_mime_head parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated String#index searches combined with String#slice! prefix deletion. For escape-heavy quoted values, this causes super-linear processing. An unauthenticated attacker can send a crafted multipart/form-data request containing many parts with long backslash-escaped parameter values to trigger excessive CPU usage during multipart parsing. This results in a denial of service condition in Rack applications that accept multipart form data. This issue has been patched in versions 3.1.21 and 3.2.6.
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parser#handle_mime_head parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated String#index searches combined with String#slice! prefix deletion. For escape-heavy quoted values, this causes super-linear processing. An unauthenticated attacker can send a crafted multipart/form-data request containing many parts with long backslash-escaped parameter values to trigger excessive CPU usage during multipart parsing. This results in a denial of service condition in Rack applications that accept multipart form data. This issue has been patched in versions 3.1.21 and 3.2.6.
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 ...
Rack's multipart header parsing allows Denial of Service via escape-heavy quoted parameters
Уязвимость модульного интерфейса между веб-серверами и веб-приложениями Rack, связанная с неконтролируемым расходом ресурсов, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3