Debian patches apt flaw letting MITM attackers swap packages post-verification for root

jedisct1 · x · 2026-11-05

Debian issued DSA-6607-1 for CVE-2026-109518, an apt vulnerability found by Max Justicz. After an HTTP redirect gives two package downloads the same URI, mishandled download resumption lets a man-in-the-middle attacker replace a package after verification, yielding arbitrary code execution as root. Fixed in apt 3.0.4 on trixie; users urged to upgrade immediately.

Original post →

More from Infra

Infra channel →