# CVE-2023-38545: Hackerone: CVE-2023-38545 SOCKS5 heap buffer overflow CVE-2023-38545 is fixed in 34 products on 3 platforms, first by ALAS2023-2023-377, released October 10, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-38545 - Priority: High - CVSS: 9.8 (Important) - EPSS: 0.7869 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: yes - Vendor exploitability assessment: N/A - Published: Oct 10, 2023 - Weakness: Heap-based Buffer Overflow - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38545 ## Description The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Security Fix(es): * curl: a heap-based buffer overflow in the SOCKS5 proxy handshake (CVE-2023-38545) * curl: cookie injection with none file (CVE-2023-38546) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## 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 11.6 (bullseye) | 7.74.0-1.3+deb11u10 | [DSA-5523-1](https://patchblox.com/security/data/fix/linux/dsa-5523-1.md) | Oct 11, 2023 | | Linux | curl Debian 12.15 (bookworm) | 7.88.1-10+deb12u4 | [DSA-5523-1](https://patchblox.com/security/data/fix/linux/dsa-5523-1.md) | Oct 11, 2023 | | Linux | curl Debian 13.5 (trixie) | 8.3.0-3 | [DEBIAN-CVE-2023-38545](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38545.md) | Oct 18, 2023 | | Linux | curl Debian 14 | 8.3.0-3 | [DEBIAN-CVE-2023-38545](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38545.md) | Oct 18, 2023 | | Linux | curl RHEL 9 | 0:7.76.1-26.el9_3.2 | [RHSA-2023:6745](https://patchblox.com/security/data/fix/linux/rhsa-2023-6745.md) | Nov 7, 2023 | | Linux | curl Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.14 | [curl 7.81.0-1ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-curl-7.81.0-1ubuntu1.14.md) | Oct 10, 2023 | | Linux | curl Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3.1 | [curl 8.2.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-curl-8.2.1-1ubuntu3.1.md) | Oct 10, 2023 | | Linux | curl almalinux 9 | 7.76.1-26.el9_3.2 | [ALSA-2023:6745](https://patchblox.com/security/data/fix/linux/alsa-2023-6745.md) | Nov 7, 2023 | | Linux | curl amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | curl ol 9 | 0:7.76.1-23.el9_2.4 | [ELSA-2023-5763](https://patchblox.com/security/data/fix/linux/elsa-2023-5763.md) | Oct 18, 2023 | | Linux | curl rocky 9 | 0:7.76.1-23.el9_2.4 | [RLSA-2023:5763](https://patchblox.com/security/data/fix/linux/rlsa-2023-5763.md) | Oct 24, 2023 | | Linux | curl-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | curl-debugsource amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | curl-minimal RHEL 9 | 0:7.76.1-26.el9_3.2 | [RHSA-2023:6745](https://patchblox.com/security/data/fix/linux/rhsa-2023-6745.md) | Nov 7, 2023 | | Linux | curl-minimal almalinux 9 | 7.76.1-26.el9_3.2 | [ALSA-2023:6745](https://patchblox.com/security/data/fix/linux/alsa-2023-6745.md) | Nov 7, 2023 | | Linux | curl-minimal amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | curl-minimal ol 9 | 0:7.76.1-23.el9_2.4 | [ELSA-2023-5763](https://patchblox.com/security/data/fix/linux/elsa-2023-5763.md) | Oct 18, 2023 | | Linux | curl-minimal-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl RHEL 9 | 0:7.76.1-26.el9_3.2 | [RHSA-2023:6745](https://patchblox.com/security/data/fix/linux/rhsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl almalinux 9 | 7.76.1-26.el9_3.2 | [ALSA-2023:6745](https://patchblox.com/security/data/fix/linux/alsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl ol 9 | 0:7.76.1-23.el9_2.4 | [ELSA-2023-5763](https://patchblox.com/security/data/fix/linux/elsa-2023-5763.md) | Oct 18, 2023 | | Linux | libcurl-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl-devel RHEL 9 | 0:7.76.1-26.el9_3.2 | [RHSA-2023:6745](https://patchblox.com/security/data/fix/linux/rhsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl-devel almalinux 9 | 7.76.1-26.el9_3.2 | [ALSA-2023:6745](https://patchblox.com/security/data/fix/linux/alsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl-devel amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl-devel ol 9 | 0:7.76.1-23.el9_2.4 | [ELSA-2023-5763](https://patchblox.com/security/data/fix/linux/elsa-2023-5763.md) | Oct 18, 2023 | | Linux | libcurl-minimal RHEL 9 | 0:7.76.1-26.el9_3.2 | [RHSA-2023:6745](https://patchblox.com/security/data/fix/linux/rhsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl-minimal almalinux 9 | 7.76.1-26.el9_3.2 | [ALSA-2023:6745](https://patchblox.com/security/data/fix/linux/alsa-2023-6745.md) | Nov 7, 2023 | | Linux | libcurl-minimal amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl-minimal ol 9 | 0:7.76.1-23.el9_2.4 | [ELSA-2023-5763](https://patchblox.com/security/data/fix/linux/elsa-2023-5763.md) | Oct 18, 2023 | | Linux | libcurl-minimal-debuginfo amzn 2023 | 8.3.0-1.amzn2023.0.2 | [ALAS2023-2023-377](https://patchblox.com/security/data/fix/linux/alas2023-2023-377.md) | Oct 10, 2023 | | Linux | libcurl3-gnutls Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.14 | [libcurl3-gnutls 7.81.0-1ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-gnutls-7.81.0-1ubuntu1.14.md) | Oct 10, 2023 | | Linux | libcurl3-gnutls Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3.1 | [libcurl3-gnutls 8.2.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl3-gnutls-8.2.1-1ubuntu3.1.md) | Oct 10, 2023 | | Linux | libcurl3-nss Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.14 | [libcurl3-nss 7.81.0-1ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-nss-7.81.0-1ubuntu1.14.md) | Oct 10, 2023 | | Linux | libcurl3-nss Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3.1 | [libcurl3-nss 8.2.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl3-nss-8.2.1-1ubuntu3.1.md) | Oct 10, 2023 | | Linux | libcurl4 Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.14 | [libcurl4 7.81.0-1ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl4-7.81.0-1ubuntu1.14.md) | Oct 10, 2023 | | Linux | libcurl4 Ubuntu 24.04.5 LTS (noble) | 8.2.1-1ubuntu3.1 | [libcurl4 8.2.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcurl4-8.2.1-1ubuntu3.1.md) | Oct 10, 2023 | --- Data as of 2026-11-08T00:53:09Z UTC. 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