CVE-2020-1733

描述

A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p <dir>"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'.

如何修補 CVE-2020-1733

要修補 CVE-2020-1733,請將受影響套件升級到下列已修補版本。

• —升級至 2.8.11-r0 或更新版本
• —升級至 2.9.7-r0 或更新版本

CVE-2020-1733 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)

• >= 2.8.0, < 2.8.11-r0
• from 0, < 2.9.7-r0

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2020-1733