جزئیات آسیب‌پذیری
CVE-2026-54556
Http4s: HTTP/2 Denial of Service with Ember Backend
شرح رسمی (انگلیسی)
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory denial of service in the Ember backend with HTTP/2 enabled. The Hpack wrapper in ember-core/shared/src/main/scala/org/http4s/ember/core/h2/Hpack.scala concatenates HEADERS and CONTINUATION frame fragments and decodes them into a single List, but maxHeaderSize accounting does not include indexed headers or HPACK per-header overhead. A small compressed header block can therefore expand into a much larger decoded representation that remains in memory for processing. Servers exposed to untrusted HTTP/2 traffic and clients directed to an untrusted HTTP/2 server are affected, and concurrent malicious connections can exhaust the process heap. This issue is fixed in versions 0.23.35 and 1.0.0-M47.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 8.2بالا | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| http4s | http4s | < 0.23.35 | CVEProject cvelistV5 (CNA) |
| http4s | http4s | >= 1.0.0-M1, < 1.0.0-M46 | CVEProject cvelistV5 (CNA) |
| org.http4s | http4s-ember-core_2.12 | < 0.23.35 | CVEProject cvelistV5 (CNA) |
| org.http4s | http4s-ember-core_2.13 | < 0.23.35 | CVEProject cvelistV5 (CNA) |
| org.http4s | http4s-ember-core_2.13 | >= 1.0.0-M1, < 1.0.0-M46 | CVEProject cvelistV5 (CNA) |
| org.http4s | http4s-ember-core_3 | < 0.23.35 | CVEProject cvelistV5 (CNA) |
| org.http4s | http4s-ember-core_3 | >= 1.0.0-M1, < 1.0.0-M46 | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۴- https://github.com/http4s/http4s/security/advisories/GHSA-vmm3-xgcx-67hm x_refsource_CONFIRM
- https://github.com/http4s/http4s/commit/6e8eccd64a6a74ab4811897881e95e0e1b3a818e x_refsource_MISC
- https://github.com/http4s/http4s/releases/tag/v0.23.35 x_refsource_MISC
- https://github.com/http4s/http4s/releases/tag/v1.0.0-M47 x_refsource_MISC
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۶/۰۴
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۶/۰۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- GitHub_M
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- بله
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- جزئی
ضعف‌ها (CWE)
- CWE-409Improper Handling of Highly Compressed Data (Data Amplification)