Debian apt 安全更新:中间人任意代码执行
Debian apt security update: man-in-the-middle arbitrary code execution

原始链接: https://lists.debian.org/debian-security-announce/2026/msg00526.html

Debian 安全公告 DSA-6607-1 报告 APT 中存在 CVE-2026-109518。中间人攻击者可利用不正确的 HTTP 下载续传/重定向处理,合并具有相同 URI 的两个下载,从而在验证后替换软件包并以 root 身份执行任意代码。它还修复了越界访问问题。stable trixie 用户应将 apt 升级到 3.0.4 或更高版本。请遵循 Debian 的常规升级流程。

Debian 发布了 apt 安全更新,修复了可能导致任意代码执行的中间人漏洞。该缺陷似乎出现在 apt 的 HTTP 处理中,而且由于软件包下载使用明文 HTTP,处于中间人位置的攻击者可利用它,可能通过攻陷镜像站。Debian 建议升级 apt 软件包。尚不清楚 Ubuntu 的 apt 是否也受影响。评论者指出这与 2014 年和 2019 年的 apt 漏洞类似,并 joked about a broken tool being fixed by itself.
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原文
[SECURITY] [DSA 6607-1] apt security update


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Debian Security Advisory DSA-6607-1                   [email protected]
https://www.debian.org/security/                     Salvatore Bonaccorso
November 04, 2026                     https://www.debian.org/security/faq
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Package        : apt
CVE ID         : CVE-2026-109518

Max Justicz discovered a vulnerability in the APT package manager. APT
can merge two different package downloads after an HTTP redirect gives
them the same URI. Improper file handling when resuming an HTTP download
allows a man-in-the-middle attacker to replace a package after
verification, resulting in the execution of arbitrary code as root.

For the stable distribution (trixie), this problem has been fixed in
version 3.0.4. Additionally this update addresses several out-of-bounds
access issues.

We recommend that you upgrade your apt packages.

For the detailed security status of apt please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/apt

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]
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