Unsafe behavior in setuid/setgid binaries in runtime

高 7.8CVE-2023-29403 · BIT-golang-2023-29403 · GO-2023-1840 · 08/06/2023 公開 · 17/06/2026 更新

要点

CVE-2023-29403 は stdlib, go (golang) に影響する深刻度「高」 (CVSS 7.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.43%（全脆弱性の 37.1% より高い）。
対処：1.20.5, 1.19.10 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, < 1.20.5< 1.19.10`	`1.20.51.19.10`
go golang	`≥ 1.20.0, < 1.20.5< 1.19.10`	`1.20.51.19.10`

概要

If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.

NVD の説明

On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors closed, opening any files can result in unexpected content being read or written with elevated privileges. Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents of its registers.