CVE-2017-9798
apache2 - security update
7.5
HIGH
CVSS 3.1
EPSS 95.0%
描述
Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.
如何修補 CVE-2017-9798
要修補 CVE-2017-9798,請將受影響套件升級到下列已修補版本。
- —升級至 2.4.27-r1 或更新版本
- —升級至 2.4.27-6 或更新版本
- —升級至 2.2.22-13+deb7u12 或更新版本
- —升級至 2.4.10-10+deb8u11 或更新版本
CVE-2017-9798 正在被利用嗎?
可能 — EPSS 為 95.0%,屬於高被利用機率區間,建議優先修補。
受影響套件(4)
- from 0, < 2.4.27-r1
- from 0, < 2.4.27-6
- from 0, < 2.2.22-13+deb7u12
- from 0, < 2.4.10-10+deb8u11
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:H/I:N/A:N |