CVE-2021-36770

描述

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

如何修補 CVE-2021-36770

要修補 CVE-2021-36770,請將受影響套件升級到下列已修補版本。

• —升級至 5.34.0-r1 或更新版本
• —升級至 3.12-r0 或更新版本
• —升級至 3.08-1+deb11u1 或更新版本
• —升級至 5.32.1-4+deb11u1 或更新版本

CVE-2021-36770 正在被利用嗎?

低 — EPSS 為 1.4%,目前沒有觀察到大規模利用活動。

受影響套件(4)

• from 0, < 5.34.0-r1
• from 0, < 3.12-r0
• from 0, < 3.08-1+deb11u1
• from 0, < 5.32.1-4+deb11u1

CVSS 分數

參考連結(2)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-36770
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-36770