CVE-2021-31810

描述

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).

如何修補 CVE-2021-31810

要修補 CVE-2021-31810,請將受影響套件升級到下列已修補版本。

• —升級至 2.6.8-r0 或更新版本

CVE-2021-31810 正在被利用嗎?

低 — EPSS 為 3.0%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 2.7.0, < 2.6.8-r0

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-31810