Rack vulnerable to Cross-site Scripting

中 6.1CVE-2018-16471 · GHSA-5r2p-j47h-mhpg · 13/11/2018 公開 · 17/06/2026 更新

要点

CVE-2018-16471 は rack, rack (rack project) に影響する深刻度「中」 (CVSS 6.1) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.9%（全脆弱性の 79.6% より高い）。
対処：2.0.6, 1.6.11 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
rack RubyGems	`≥ 2.0.0, < 2.0.6< 1.6.11`	`2.0.61.6.11`
rack rack_project	`≥ 1.6.0, < 1.6.11≥ 2.0.0, < 2.0.6`	`1.6.112.0.6`

概要

There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the scheme method on Rack::Request. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.

NVD の説明

There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the `scheme` method on `Rack::Request`. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.