# CVE-2023-38039: Hackerone: CVE-2023-38039 HTTP headers eat all memory CVE-2023-38039 is fixed in 34 products on 3 platforms, first by curl 8.2.1-1ubuntu3, released September 12, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-38039 - Priority: High - CVSS: 7.5 (Low) - EPSS: 0.5621 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: yes - Published: Sep 12, 2023 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38039 ## Description When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers it would accept in a response, allowing a malicious server to stream an endless series of headers and eventually cause curl to run out of heap memory. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.5122 | [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.5122 | [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.5122 | [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 21H2 for 32-bit Systems | 22000.2600 | [KB5032192](https://patchblox.com/security/data/fix/microsoft/kb5032192.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 21H2 for ARM64-based Systems | | [KB5032189](https://patchblox.com/security/data/fix/microsoft/kb5032189.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 21H2 for x64-based Systems | | [KB5032189](https://patchblox.com/security/data/fix/microsoft/kb5032189.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 22H2 for 32-bit Systems | | [KB5032189](https://patchblox.com/security/data/fix/microsoft/kb5032189.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 22H2 for ARM64-based Systems | | [KB5032189](https://patchblox.com/security/data/fix/microsoft/kb5032189.md) | Nov 14, 2023 | | Microsoft | Windows 10 Version 22H2 for x64-based Systems | | [KB5032189](https://patchblox.com/security/data/fix/microsoft/kb5032189.md) | Nov 14, 2023 | | Microsoft | Windows 11 Version 22H2 for ARM64-based Systems | | [KB5032190](https://patchblox.com/security/data/fix/microsoft/kb5032190.md) | Nov 14, 2023 | | Microsoft | Windows 11 Version 22H2 for x64-based Systems | | [KB5032190](https://patchblox.com/security/data/fix/microsoft/kb5032190.md) | Nov 14, 2023 | | Microsoft | Windows 11 Version 23H2 for ARM64-based Systems | | [KB5032190](https://patchblox.com/security/data/fix/microsoft/kb5032190.md) | Nov 14, 2023 | | Microsoft | Windows 11 Version 23H2 for x64-based Systems | | [KB5032190](https://patchblox.com/security/data/fix/microsoft/kb5032190.md) | Nov 14, 2023 | | Microsoft | Windows 11 version 21H2 for ARM64-based Systems | 22000.2600 | [KB5032192](https://patchblox.com/security/data/fix/microsoft/kb5032192.md) | Nov 14, 2023 | | Microsoft | Windows 11 version 21H2 for x64-based Systems | 22000.2600 | [KB5032192](https://patchblox.com/security/data/fix/microsoft/kb5032192.md) | Nov 14, 2023 | | Microsoft | Windows Server 2019 | 17763.5122 | [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.5122 | [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | | Microsoft | Windows Server 2022 | 20348.2113 | [KB5032198](https://patchblox.com/security/data/fix/microsoft/kb5032198.md) | Nov 14, 2023 | | Microsoft | Windows Server 2022 (Server Core installation) | 20348.2113 | [KB5032198](https://patchblox.com/security/data/fix/microsoft/kb5032198.md) | Nov 14, 2023 | | macOS | Monterey | 12.7.3 | [Monterey 12.7.3](https://patchblox.com/security/data/fix/macos/monterey-12.7.3.md) | Jan 22, 2024 | | macOS | Ventura | 13.6.4 | [Ventura 13.6.4](https://patchblox.com/security/data/fix/macos/ventura-13.6.4.md) | Jan 22, 2024 | | Linux | curl Debian 12.15 (bookworm) | 7.88.1-10+deb12u3 | [DEBIAN-CVE-2023-38039](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38039.md) | Sep 15, 2023 | | Linux | curl Debian 13.5 (trixie) | 8.3.0-1 | [DEBIAN-CVE-2023-38039](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38039.md) | Sep 15, 2023 | | Linux | curl Debian 14 | 8.3.0-1 | [DEBIAN-CVE-2023-38039](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38039.md) | Sep 15, 2023 | | Linux | curl Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3 | [curl 8.2.1-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-curl-8.2.1-1ubuntu3.md) | Sep 12, 2023 | | Linux | curl amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | curl-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | curl-debugsource amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | curl-minimal amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | curl-minimal-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl-devel amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl-minimal amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl-minimal-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.1 | [ALAS2023-2023-368](https://patchblox.com/security/data/fix/linux/alas2023-2023-368.md) | Sep 27, 2023 | | Linux | libcurl3-gnutls Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3 | [libcurl3-gnutls 8.2.1-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl3-gnutls-8.2.1-1ubuntu3.md) | Sep 12, 2023 | | Linux | libcurl3-nss Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3 | [libcurl3-nss 8.2.1-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl3-nss-8.2.1-1ubuntu3.md) | Sep 12, 2023 | | Linux | libcurl4 Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3 | [libcurl4 8.2.1-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl4-8.2.1-1ubuntu3.md) | Sep 12, 2023 | --- Data as of 2026-11-09T13:31:49Z UTC. 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