Bouncy Castle Java Cryptography API vulnerable to DNS poisoning

高 7.5CVE-2024-34447 · GHSA-4h8f-2wvx-gg5w · 03/05/2024 公開 · 17/06/2026 更新

要点

CVE-2024-34447 は org.bouncycastle:bcprov-jdk12, org.bouncycastle:bcprov-jdk14, org.bouncycastle:bcprov-jdk15on 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）：0.77%（全脆弱性の 55.7% より高い）。
対処：1.78, 2.73.6, 1.0.19 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
org.bouncycastle:bcprov-jdk12 Maven	`≥ 1.61, < 1.78`	`1.78`
org.bouncycastle:bcprov-jdk14 Maven	`≥ 1.61, < 1.78`	`1.78`
org.bouncycastle:bcprov-jdk15on Maven	`≥ 1.61, < 1.78`	`1.78`
org.bouncycastle:bcprov-jdk15to18 Maven	`≥ 1.61, < 1.78`	`1.78`
org.bouncycastle:bcprov-jdk18on Maven	`≥ 1.61, < 1.78`	`1.78`
org.bouncycastle:bcprov-lts8on Maven	`< 2.73.6`	`2.73.6`
org.bouncycastle:bctls-fips Maven	`< 1.0.19`	`1.0.19`

概要

An issue was discovered in the Bouncy Castle Crypto Package For Java before BC TLS Java 1.0.19 (ships with BC Java 1.78, BC Java (LTS) 2.73.6) and before BC FIPS TLS Java 1.0.19. When endpoint identification is enabled in the BCJSSE and an SSL socket is created without an explicit hostname (as happens with HttpsURLConnection), hostname verification could be performed against a DNS-resolved IP address in some situations, opening up a possibility of DNS poisoning.

NVD の説明