CVE-2019-17638
Operation on a Resource after Expiration or Release in Jetty Server
描述
In Eclipse Jetty, versions 9.4.27.v20200227 to 9.4.29.v20200521, in case of too large response headers, Jetty throws an exception to produce an HTTP 431 error. When this happens, the ByteBuffer containing the HTTP response headers is released back to the ByteBufferPool twice. Because of this double release, two threads can acquire the same ByteBuffer from the pool and while thread1 is about to use the ByteBuffer to write response1 data, thread2 fills the ByteBuffer with other data. Thread1 then proceeds to write the buffer that now contains different data. This results in client1, which issued request1 seeing data from another request or response which could contain sensitive data belonging to client2 (HTTP session ids, authentication credentials, etc.). If the Jetty version cannot be upgraded, the vulnerability can be significantly reduced by configuring a responseHeaderSize significantly larger than the requestHeaderSize (12KB responseHeaderSize and 8KB requestHeaderSize).
如何修補 CVE-2019-17638
要修補 CVE-2019-17638,請將受影響套件升級到下列已修補版本。
- —升級至 9.4.31-1 或更新版本
- —升級至 9.4.30.v20200611 或更新版本
CVE-2019-17638 正在被利用嗎?
中等 — EPSS 為 11.1%,可持續追蹤但非最高優先。
受影響套件(2)
- from 0, < 9.4.31-1
- >= 9.4.27, < 9.4.30.v20200611
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |