CVE-2022-21688

描述

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Affected versions of the desktop application were found to be vulnerable to denial of service via an undisclosed vulnerability in the QT image parsing. Roughly 20 bytes lead to 2GB memory consumption and this can be triggered multiple times. To be abused, this vulnerability requires rendering in the history tab, so some user interaction is required. An adversary with knowledge of the Onion service address in public mode or with authentication in private mode can perform a Denial of Service attack, which quickly results in out-of-memory for the server. This requires the desktop application with rendered history, therefore the impact is only elevated. This issue has been patched in version 2.5.

如何修補 CVE-2022-21688

要修補 CVE-2022-21688,請將受影響套件升級到下列已修補版本。

• —升級至 2.5 或更新版本
• —升級至 2.5 或更新版本

CVE-2022-21688 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, < 2.5
• from 0, < 2.5

CVSS 分數

參考連結(5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-21688
• PATCHgithub.com/onionshare/onionshare
• WEBgithub.com/onionshare/onionshare/releases/tag/v2.5
• WEBgithub.com/onionshare/onionshare/security/advisories/GHSA-x7wr-283h-5h2v