报告安全问题

我们非常重视安全问题。我们始终感谢您对我们安全问题的意见和反馈。

您可以通过 GitHub 安全公告 发送紧急或敏感的报告。

如果您愿意,也可以通过电子邮件发送至 <security@twistedmatrix.com>。如果您愿意,可以使用我们的 PGP 公钥。我们将创建一个 GitHub 安全公告来协调修复。请提供您的 GitHub 用户名,以便我们将您添加为公告的合作者。请参阅 GHSA-c2jg-hw38-jrqq 了解示例。我们会尽快回复您。

Twisted 是一个完全由志愿者参与的项目,我们可能需要一些时间才能回复您。

如果您认为已经过了不合理的时间还没有收到回复,请随时跟进!

所有版本(包括安全版本)都会在邮件列表中发布。请考虑订阅以接收有关安全修复可用性的通知。

开发者安全流程

正常 Twisted 开发流程的目标是使所有步骤透明,并在所有时间将所有信息记录在公共位置(问题跟踪器或分支)。

Twisted 开发流程的安全变体的目标是在解决安全问题时跟踪进度,同时最大限度地减少在安全问题修复程序提供给 Twisted 用户之前,攻击者可以利用的信息可用时间窗口。

此流程旨在作为有用的建议。根据问题的严重程度,其部分内容可能会严格或松散地遵循。

  1. 首先,创建一个不描述问题的工单,只需写上“安全问题,描述待定”并添加“security”关键字。

  2. 使用 GitHub UI 在 GitHub 中创建安全公告。这将触发创建私有存储库,可用于开发补丁。此自动创建的私有存储库还用于私下审查 PR。

  3. 在新的私有存储库中进行必要的更改以修复安全问题。

  4. 使用 GitHub 安全公告 UI 创建新的 PR。这将生成一个私有 PR。请求审查并获得对 PR 的批准。批准后不要合并 PR。在 PR 描述中定义所需的合并提交消息。PR 将由发布经理在与第一个候选版本同时合并。

  5. 对私有存储库和私有 PR 的自动通知有限。尝试通过 IRC、gitter 或其他方式进行沟通,以找到审查新 PR 的人。与发布经理协调。有关发布流程的更多信息,请参阅 发布流程 专用页面。

  6. 我们不知道将代码安全地传输到我们的公共持续集成系统的方法。审阅者应在其本地分支的新私有存储库中手动运行自动化测试。

除了在开发过程中隐藏问题的详细信息外,所有正常策略都适用。安全修复需要单元测试、代码审查等。

用于电子邮件通信的 PGP 密钥

以下是 security@twistedmatrix.com 的 PGP 密钥。

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2.0.22 (Darwin)

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-----END PGP PUBLIC KEY BLOCK-----

安全审计

我们需要对 Twisted 进行模块级的全面审计。本文档列出了在执行此操作或编写自己的代码时需要查找的内容。

错误输入

在接收不受信任的数据的任何地方,我们都需要小心。在某些情况下,我们不够谨慎。例如,在 HTTP 中,有很多地方需要将字符串转换为整数,因此我们使用 int() 。问题是,这将接受负数或十六进制 (0x123) 数字,而协议应该只接受正数。

资源耗尽和拒绝服务

确保我们永远不允许用户创建任意大小的字符串或文件。一些协议仍然存在此类问题。设置一个允许合理使用但会切断巨大请求的限制,并允许更改此限制。

另一个需要注意的操作是异常。它们会填满日志,并在网页中呈现时占用大量 CPU 时间。