# CVE-2024-34447: bouncycastle: An issue was discovered in the Bouncy Castle Crypto Package For Java before BC TLS Java 1.0.19 (ships with BC Java 1.... CVE-2024-34447 is fixed in 14 products on 1 platform, first by DEBIAN-CVE-2024-34447, released May 3, 2024. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2024-34447 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0077 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 3, 2024 ## Description 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bouncycastle Debian 13.5 (trixie) | 1.80-1 | [DEBIAN-CVE-2024-34447](https://patchblox.com/security/data/fix/linux/debian-cve-2024-34447.md) | May 3, 2024 | | Linux | bouncycastle Debian 14 | 1.80-1 | [DEBIAN-CVE-2024-34447](https://patchblox.com/security/data/fix/linux/debian-cve-2024-34447.md) | May 3, 2024 | | Linux | bouncycastle amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-javadoc amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-mail amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-pg amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-pkix amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-tls amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | bouncycastle-util amzn 2023 | 1.70-4.amzn2023.0.5 | [ALAS2023-2024-636](https://patchblox.com/security/data/fix/linux/alas2023-2024-636.md) | Jun 6, 2024 | | Linux | libbcjmail-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcjmail-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcjmail-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbcmail-java Ubuntu 20.04 LTS (focal) | 1.61-1ubuntu0.1~esm1 | [libbcmail-java 1.61-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbcmail-java-1.61-1ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcmail-java Ubuntu 22.04.1 LTS (jammy) | 1.68-5ubuntu0.1~esm1 | [libbcmail-java 1.68-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbcmail-java-1.68-5ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcmail-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcmail-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcmail-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbcpg-java Ubuntu 20.04 LTS (focal) | 1.61-1ubuntu0.1~esm1 | [libbcpg-java 1.61-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbcpg-java-1.61-1ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcpg-java Ubuntu 22.04.1 LTS (jammy) | 1.68-5ubuntu0.1~esm1 | [libbcpg-java 1.68-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbcpg-java-1.68-5ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcpg-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcpg-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcpg-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbcpkix-java Ubuntu 20.04 LTS (focal) | 1.61-1ubuntu0.1~esm1 | [libbcpkix-java 1.61-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbcpkix-java-1.61-1ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcpkix-java Ubuntu 22.04.1 LTS (jammy) | 1.68-5ubuntu0.1~esm1 | [libbcpkix-java 1.68-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbcpkix-java-1.68-5ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcpkix-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcpkix-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcpkix-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbcprov-java Ubuntu 20.04 LTS (focal) | 1.61-1ubuntu0.1~esm1 | [libbcprov-java 1.61-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbcprov-java-1.61-1ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcprov-java Ubuntu 22.04.1 LTS (jammy) | 1.68-5ubuntu0.1~esm1 | [libbcprov-java 1.68-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbcprov-java-1.68-5ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbcprov-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcprov-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcprov-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbctls-java Ubuntu 22.04.1 LTS (jammy) | 1.68-5ubuntu0.1~esm1 | [libbctls-java 1.68-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbctls-java-1.68-5ubuntu0.1-esm1.md) | May 14, 2024 | | Linux | libbctls-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbctls-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbctls-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | | Linux | libbcutil-java Ubuntu 24.04.5 LTS (noble) | 1.77-1ubuntu0.1~esm1 | [libbcutil-java 1.77-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbcutil-java-1.77-1ubuntu0.1-esm1.md) | Aug 13, 2025 | --- Data as of 2026-11-09T01:18:40Z UTC. 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