CVE-2026-43619

描述

Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.

如何修補 CVE-2026-43619

要修補 CVE-2026-43619,請將受影響套件升級到下列已修補版本。

• —升級至 3.4.3-r0 或更新版本
• —升級至 3.2.3-4+deb11u4 或更新版本

CVE-2026-43619 正在被利用嗎?

低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 3.4.3-r0
• from 0, < 3.2.3-4+deb11u4

CVSS 分數

參考連結(2)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2026-43619
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2026-43619