CVE-2018-15470
6.5
MEDIUM
CVSS 3.1
EPSS 0.40%
描述
An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.
如何修補 CVE-2018-15470
要修補 CVE-2018-15470,請將受影響套件升級到下列已修補版本。
- —升級至 4.11.1-r0 或更新版本
- —升級至 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 或更新版本
CVE-2018-15470 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 4.11.1-r0
- from 0, < 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |