CVE-2026-43618

描述

Rsync version 3.4.2 and prior contain an integer overflow vulnerability in the compressed-token decoder where a 32-bit signed counter is not checked for overflow, allowing a malicious sender to trigger an overflow that causes the receiver process to read and return data from outside the intended buffer bounds. Attackers can exploit this vulnerability to disclose process memory contents including environment variables, passwords, heap and stack data, and library memory pointers, significantly reducing ASLR effectiveness and facilitating further exploitation.

如何修補 CVE-2026-43618

要修補 CVE-2026-43618,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-2026-43618 正在被利用嗎?

低 — EPSS 為 0.8%,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-2026-43618
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2026-43618