CVE-2020-11080
Denial of service in nghttp2
7.5
HIGH
CVSS 3.1
EPSS 5.3%
描述
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
如何修補 CVE-2020-11080
要修補 CVE-2020-11080,請將受影響套件升級到下列已修補版本。
- —升級至 1.39.2-r1 或更新版本
- —升級至 12.20.1-r0 或更新版本
- —升級至 10.21.0 或更新版本
- —升級至 10.12.1 或更新版本
- —升級至 1.41.0-1 或更新版本
- —升級至 1.36.0-2+deb10u2 或更新版本
- —升級至 10.21.0~dfsg-1 或更新版本
- —升級至 10.21.0~dfsg-1~deb10u1 或更新版本
CVE-2020-11080 正在被利用嗎?
中等 — EPSS 為 5.3%,可持續追蹤但非最高優先。
受影響套件(8)
- from 0, < 1.39.2-r1
- from 0, < 12.20.1-r0
- >= 10.13.0, < 10.21.0, >= 12.13.0, < 12.18.0, >= 14.0.0, < 14.4.1
- >= 10.0.0, < 10.12.1, >= 10.13.0, < 10.21.0, >= 12.0.0, < 12.12.1, >= 12.13.0, < 12.18.0, >= 14.0.0, < 14.4.1
- from 0, < 1.41.0-1
- from 0, < 1.36.0-2+deb10u2
- from 0, < 10.21.0~dfsg-1
- from 0, < 10.21.0~dfsg-1~deb10u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |