# CVE-2023-27536: libcurl: The curl packages provide the libcurl library and the curl utility for downloading files from servers using various p...

CVE-2023-27536 is fixed in 13 products on 1 platform, first by curl 7.58.0-2ubuntu3.24, released March 19, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-27536
- Priority: Routine
- CVSS: 5.9 (Moderate)
- EPSS: 0.0176
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 19, 2023

## 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: GSS delegation too eager connection re-use (CVE-2023-27536)  * curl: IDN wildcard match may lead to Improper Cerificate Validation (CVE-2023-28321)  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 |
|---|---|---|---|---|
| Linux | curl Debian 12.15 (bookworm) | 7.88.1-7 | [DEBIAN-CVE-2023-27536](https://patchblox.com/security/data/fix/linux/debian-cve-2023-27536.md) | Mar 30, 2023 |
| Linux | curl Debian 13.5 (trixie) | 7.88.1-7 | [DEBIAN-CVE-2023-27536](https://patchblox.com/security/data/fix/linux/debian-cve-2023-27536.md) | Mar 30, 2023 |
| Linux | curl Debian 14 | 7.88.1-7 | [DEBIAN-CVE-2023-27536](https://patchblox.com/security/data/fix/linux/debian-cve-2023-27536.md) | Mar 30, 2023 |
| Linux | curl RHEL 8 | 0:7.61.1-30.el8_8.3 | [RHSA-2023:4523](https://patchblox.com/security/data/fix/linux/rhsa-2023-4523.md) | Aug 8, 2023 |
| Linux | curl RHEL 9 | 0:7.76.1-26.el9 | [RHSA-2023:6679](https://patchblox.com/security/data/fix/linux/rhsa-2023-6679.md) | Nov 7, 2023 |
| Linux | curl Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24 | [curl 7.58.0-2ubuntu3.24](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-curl-7.58.0-2ubuntu3.24.md) | Mar 19, 2023 |
| Linux | curl Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.18 | [curl 7.68.0-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-curl-7.68.0-1ubuntu2.18.md) | Mar 19, 2023 |
| Linux | curl Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.10 | [curl 7.81.0-1ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-curl-7.81.0-1ubuntu1.10.md) | Mar 19, 2023 |
| Linux | curl almalinux 8 | 7.61.1-30.el8_8.3 | [ALSA-2023:4523](https://patchblox.com/security/data/fix/linux/alsa-2023-4523.md) | Aug 8, 2023 |
| Linux | curl almalinux 9 | 7.76.1-26.el9 | [ALSA-2023:6679](https://patchblox.com/security/data/fix/linux/alsa-2023-6679.md) | Nov 7, 2023 |
| Linux | curl amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | curl ol 8 | 0:7.61.1-30.el8_8.3 | [ELSA-2023-4523](https://patchblox.com/security/data/fix/linux/elsa-2023-4523.md) | Aug 10, 2023 |
| Linux | curl ol 9 | 0:7.76.1-26.el9 | [ELSA-2023-6679](https://patchblox.com/security/data/fix/linux/elsa-2023-6679.md) | Nov 11, 2023 |
| Linux | curl rocky 8 | 0:7.61.1-30.el8_8.3 | [RLSA-2023:4523](https://patchblox.com/security/data/fix/linux/rlsa-2023-4523.md) | Oct 6, 2023 |
| Linux | curl-debuginfo amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | curl-debugsource amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | curl-minimal RHEL 9 | 0:7.76.1-26.el9 | [RHSA-2023:6679](https://patchblox.com/security/data/fix/linux/rhsa-2023-6679.md) | Nov 7, 2023 |
| Linux | curl-minimal almalinux 9 | 7.76.1-26.el9 | [ALSA-2023:6679](https://patchblox.com/security/data/fix/linux/alsa-2023-6679.md) | Nov 7, 2023 |
| Linux | curl-minimal amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | curl-minimal ol 9 | 0:7.76.1-26.el9 | [ELSA-2023-6679](https://patchblox.com/security/data/fix/linux/elsa-2023-6679.md) | Nov 11, 2023 |
| Linux | curl-minimal-debuginfo amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl RHEL 8 | 0:7.61.1-30.el8_8.3 | [RHSA-2023:4523](https://patchblox.com/security/data/fix/linux/rhsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl RHEL 9 | 0:7.76.1-26.el9 | [RHSA-2023:6679](https://patchblox.com/security/data/fix/linux/rhsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl almalinux 8 | 7.61.1-30.el8_8.3 | [ALSA-2023:4523](https://patchblox.com/security/data/fix/linux/alsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl almalinux 9 | 7.76.1-26.el9 | [ALSA-2023:6679](https://patchblox.com/security/data/fix/linux/alsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl ol 8 | 0:7.61.1-30.el8_8.3 | [ELSA-2023-4523](https://patchblox.com/security/data/fix/linux/elsa-2023-4523.md) | Aug 10, 2023 |
| Linux | libcurl ol 9 | 0:7.76.1-26.el9 | [ELSA-2023-6679](https://patchblox.com/security/data/fix/linux/elsa-2023-6679.md) | Nov 11, 2023 |
| Linux | libcurl-debuginfo amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl-devel RHEL 8 | 0:7.61.1-30.el8_8.3 | [RHSA-2023:4523](https://patchblox.com/security/data/fix/linux/rhsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl-devel RHEL 9 | 0:7.76.1-26.el9 | [RHSA-2023:6679](https://patchblox.com/security/data/fix/linux/rhsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl-devel almalinux 8 | 7.61.1-30.el8_8.3 | [ALSA-2023:4523](https://patchblox.com/security/data/fix/linux/alsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl-devel almalinux 9 | 7.76.1-26.el9 | [ALSA-2023:6679](https://patchblox.com/security/data/fix/linux/alsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl-devel amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl-devel ol 8 | 0:7.61.1-30.el8_8.3 | [ELSA-2023-4523](https://patchblox.com/security/data/fix/linux/elsa-2023-4523.md) | Aug 10, 2023 |
| Linux | libcurl-devel ol 9 | 0:7.76.1-26.el9 | [ELSA-2023-6679](https://patchblox.com/security/data/fix/linux/elsa-2023-6679.md) | Nov 11, 2023 |
| Linux | libcurl-minimal RHEL 8 | 0:7.61.1-30.el8_8.3 | [RHSA-2023:4523](https://patchblox.com/security/data/fix/linux/rhsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl-minimal RHEL 9 | 0:7.76.1-26.el9 | [RHSA-2023:6679](https://patchblox.com/security/data/fix/linux/rhsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl-minimal almalinux 8 | 7.61.1-30.el8_8.3 | [ALSA-2023:4523](https://patchblox.com/security/data/fix/linux/alsa-2023-4523.md) | Aug 8, 2023 |
| Linux | libcurl-minimal almalinux 9 | 7.76.1-26.el9 | [ALSA-2023:6679](https://patchblox.com/security/data/fix/linux/alsa-2023-6679.md) | Nov 7, 2023 |
| Linux | libcurl-minimal amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl-minimal ol 8 | 0:7.61.1-30.el8_8.3 | [ELSA-2023-4523](https://patchblox.com/security/data/fix/linux/elsa-2023-4523.md) | Aug 10, 2023 |
| Linux | libcurl-minimal ol 9 | 0:7.76.1-26.el9 | [ELSA-2023-6679](https://patchblox.com/security/data/fix/linux/elsa-2023-6679.md) | Nov 11, 2023 |
| Linux | libcurl-minimal-debuginfo amzn 2023 | 8.0.1-1.amzn2023 | [ALAS2023-2023-193](https://patchblox.com/security/data/fix/linux/alas2023-2023-193.md) | Jun 5, 2023 |
| Linux | libcurl3-gnutls Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24 | [libcurl3-gnutls 7.58.0-2ubuntu3.24](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-gnutls-7.58.0-2ubuntu3.24.md) | Mar 19, 2023 |
| Linux | libcurl3-gnutls Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.18 | [libcurl3-gnutls 7.68.0-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-gnutls-7.68.0-1ubuntu2.18.md) | Mar 19, 2023 |
| Linux | libcurl3-gnutls Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.10 | [libcurl3-gnutls 7.81.0-1ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-gnutls-7.81.0-1ubuntu1.10.md) | Mar 19, 2023 |
| Linux | libcurl3-nss Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24 | [libcurl3-nss 7.58.0-2ubuntu3.24](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-nss-7.58.0-2ubuntu3.24.md) | Mar 19, 2023 |
| Linux | libcurl3-nss Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.18 | [libcurl3-nss 7.68.0-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-nss-7.68.0-1ubuntu2.18.md) | Mar 19, 2023 |
| Linux | libcurl3-nss Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.10 | [libcurl3-nss 7.81.0-1ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-nss-7.81.0-1ubuntu1.10.md) | Mar 19, 2023 |
| Linux | libcurl4 Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24 | [libcurl4 7.58.0-2ubuntu3.24](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl4-7.58.0-2ubuntu3.24.md) | Mar 19, 2023 |
| Linux | libcurl4 Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.18 | [libcurl4 7.68.0-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl4-7.68.0-1ubuntu2.18.md) | Mar 19, 2023 |
| Linux | libcurl4 Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.10 | [libcurl4 7.81.0-1ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl4-7.81.0-1ubuntu1.10.md) | Mar 19, 2023 |

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