crewjam/saml vulnerable to Denial Of Service Via Deflate Decompression Bomb

高 7.5CVE-2023-28119 · GHSA-5mqj-xc49-246p · GO-2023-1664 · 22/03/2023 公開 · 17/06/2026 更新

要点

CVE-2023-28119 は github.com/crewjam/saml, saml (saml project) に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.96%（全脆弱性の 61.5% より高い）。
対処：0.4.13 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
github.com/crewjam/saml Go	`< 0.4.13`	`0.4.13`
saml saml_project	`= 0.4.12`	修正版なし

概要

Our use of flate.NewReader does not limit the size of the input. The user could pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process.

NVD の説明

The crewjam/saml go library contains a partial implementation of the SAML standard in golang. Prior to version 0.4.13, the package's use of `flate.NewReader` does not limit the size of the input. The user can pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process. This issue is patched in version 0.4.13.