红帽全球峰会5.6.3. Shell 和命令行工具
禁用对 curl 的 metalink 支持
在 curl 功能中发现了一个缺陷，它在处理使用 Metalink 下载的内容时处理凭证和文件哈希不匹配的方式存在问题。此漏洞允许控制托管服务器的恶意执行器：
- 欺骗用户下载恶意内容
- 在用户不知情的情况下获取对提供的凭证的未授权的访问
来自此漏洞的最大威胁是机密性和完整性。为避免这种情况，在 Red Hat Enterprise Linux 8.2.0.z 中禁用了对 curl 的Metalink 支持。
作为临时解决方案，在下载 Metalink 文件后执行以下命令：
wget --trust-server-names --input-metalink`例如：
wget --trust-server-names --input-metalink <(curl -s $URL)(BZ#1999620)
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