CVE-2021-43859
Denial of Service by injecting highly recursive collections or maps in XStream
描述
XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.
如何修補 CVE-2021-43859
要修補 CVE-2021-43859,請將受影響套件升級到下列已修補版本。
- —升級至 1.4.19 或更新版本
CVE-2021-43859 正在被利用嗎?
中等 — EPSS 為 7.9%,可持續追蹤但非最高優先。
受影響套件(1)
- from 0, < 1.4.19
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 |