Excessive memory allocation in net/http and net/textproto

高 7.5CVE-2023-24534 · BIT-golang-2023-24534 · GO-2023-1704 · 06/04/2023 公開 · 17/06/2026 更新

要点

CVE-2023-24534 は stdlib, go (golang) 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）：1.9%（全脆弱性の 79.5% より高い）。
対処：1.20.3, 1.19.8 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
stdlib Go	`≥ 1.20.0-0, < 1.20.3< 1.19.8`	`1.20.31.19.8`
go golang	`≥ 1.20.0, < 1.20.3< 1.19.8`	`1.20.31.19.8`

概要

HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading to a denial of service.

Certain unusual patterns of input data can cause the common function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service.

With fix, header parsing now correctly allocates only the memory required to hold parsed headers.

NVD の説明

HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading to a denial of service. Certain unusual patterns of input data can cause the common function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service. With fix, header parsing now correctly allocates only the memory required to hold parsed headers.