CVE-2021-32739
icinga2 - security update
描述
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. From version 2.4.0 through version 2.12.4, a vulnerability exists that may allow privilege escalation for authenticated API users. With a read-ony user's credentials, an attacker can view most attributes of all config objects including `ticket_salt` of `ApiListener`. This salt is enough to compute a ticket for every possible common name (CN). A ticket, the master node's certificate, and a self-signed certificate are enough to successfully request the desired certificate from Icinga. That certificate may in turn be used to steal an endpoint or API user's identity. Versions 2.12.5 and 2.11.10 both contain a fix the vulnerability. As a workaround, one may either specify queryable types explicitly or filter out ApiListener objects.
如何修補 CVE-2021-32739
要修補 CVE-2021-32739,請將受影響套件升級到下列已修補版本。
- —升級至 2.12.3-1+deb11u1 或更新版本
- —升級至 2.6.0-2+deb9u2 或更新版本
- —升級至 2.12.3-1+deb11u1 或更新版本
CVE-2021-32739 正在被利用嗎?
低 — EPSS 為 1.1%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 2.12.3-1+deb11u1
- from 0, < 2.6.0-2+deb9u2
- from 0, < 2.12.3-1+deb11u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |