CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Multipart::Parser only wraps the request body in a BoundedIO when CONTENT_LENGTH is present. When a multipart/form-data request is sent without a Content-Length header, such as with HTTP chunked transfer encoding, multipart parsing continues until end-of-stream with no total size limit. For file parts, the uploaded body is written directly to a temporary file on disk rather than being constrained by the buffered in-memory upload limit. An unauthenticated attacker can therefore stream an arbitrarily large multipart file upload and consume unbounded disk space. This results in a denial of service condition for Rack applications that accept multipart form data. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Засегнати продукти
- rack rack: < 2.2.23; >= 3.0.0.beta1, < 3.1.21; >= 3.2.0, < 3.2.6
Red Hat: още 6 продукта, добавени от Red Hat
Logging Subsystem for Red Hat OpenShift, Red Hat 3scale API Management Platform 2, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Вид слабост
История
- 2 април 2026 Публикувано
Други уязвимости в rack rack
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-34829
- https://nvd.nist.gov/vuln/detail/CVE-2026-34829
- https://github.com/rack/rack/security/advisories/GHSA-8vqr-qjwx-82mw
- https://access.redhat.com/security/cve/CVE-2026-34829
- https://bugzilla.redhat.com/show_bug.cgi?id=2454488
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34829.json