CVE-2020-4044
xrdp - security update
7.8
HIGH
CVSS 3.1
EPSS 2.4%
描述
The xrdp-sesman service before version 0.9.13.1 can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350. This will allow them to capture any user credentials that are submitted to XRDP and approve or reject arbitrary login credentials. For xorgxrdp sessions in particular, this allows an unauthorized user to hijack an existing session. This is a buffer overflow attack, so there may be a risk of arbitrary code execution as well.
如何修補 CVE-2020-4044
要修補 CVE-2020-4044,請將受影響套件升級到下列已修補版本。
- —升級至 0.9.12-1.1 或更新版本
- —升級至 0.9.1-9+deb9u4 或更新版本
- —升級至 0.9.9-1+deb10u1 或更新版本
CVE-2020-4044 正在被利用嗎?
低 — EPSS 為 2.4%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 0.9.12-1.1
- from 0, < 0.9.1-9+deb9u4
- from 0, < 0.9.9-1+deb10u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |