# CVE-2023-31124: c-ares: c-ares is an asynchronous resolver library

CVE-2023-31124 is fixed in 14 products on 1 platform, first by DEBIAN-CVE-2023-31124, released May 25, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-31124
- Priority: High
- CVSS: 8.6 (low)
- EPSS: 0.0094
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 25, 2023

## Description

c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when cross compiling aarch64 android.  This will downgrade to using rand() as a fallback which could allow an attacker to take advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | c-ares Debian 13.5 (trixie) | 1.19.1-2 | [DEBIAN-CVE-2023-31124](https://patchblox.com/security/data/fix/linux/debian-cve-2023-31124.md) | May 25, 2023 |
| Linux | c-ares Debian 14 | 1.19.1-2 | [DEBIAN-CVE-2023-31124](https://patchblox.com/security/data/fix/linux/debian-cve-2023-31124.md) | May 25, 2023 |
| Linux | c-ares RHEL 9 | 0:1.19.1-1.el9 | [RHSA-2023:6635](https://patchblox.com/security/data/fix/linux/rhsa-2023-6635.md) | Nov 7, 2023 |
| Linux | c-ares almalinux 9 | 1.19.1-1.el9 | [ALSA-2023:6635](https://patchblox.com/security/data/fix/linux/alsa-2023-6635.md) | Nov 7, 2023 |
| Linux | c-ares amzn 2023 | 1.19.0-1.amzn2023 | [ALAS2023-2023-198](https://patchblox.com/security/data/fix/linux/alas2023-2023-198.md) | Jun 5, 2023 |
| Linux | c-ares ol 9 | 0:1.19.1-1.el9 | [ELSA-2023-6635](https://patchblox.com/security/data/fix/linux/elsa-2023-6635.md) | Nov 11, 2023 |
| Linux | c-ares-debuginfo amzn 2023 | 1.19.0-1.amzn2023 | [ALAS2023-2023-198](https://patchblox.com/security/data/fix/linux/alas2023-2023-198.md) | Jun 5, 2023 |
| Linux | c-ares-debugsource amzn 2023 | 1.19.0-1.amzn2023 | [ALAS2023-2023-198](https://patchblox.com/security/data/fix/linux/alas2023-2023-198.md) | Jun 5, 2023 |
| Linux | c-ares-devel RHEL 9 | 0:1.19.1-1.el9 | [RHSA-2023:6635](https://patchblox.com/security/data/fix/linux/rhsa-2023-6635.md) | Nov 7, 2023 |
| Linux | c-ares-devel almalinux 9 | 1.19.1-1.el9 | [ALSA-2023:6635](https://patchblox.com/security/data/fix/linux/alsa-2023-6635.md) | Nov 7, 2023 |
| Linux | c-ares-devel amzn 2023 | 1.19.0-1.amzn2023 | [ALAS2023-2023-198](https://patchblox.com/security/data/fix/linux/alas2023-2023-198.md) | Jun 5, 2023 |
| Linux | c-ares-devel ol 9 | 0:1.19.1-1.el9 | [ELSA-2023-6635](https://patchblox.com/security/data/fix/linux/elsa-2023-6635.md) | Nov 11, 2023 |
| Linux | ecs-service-connect-agent amzn 2023 | v1.27.0.0-1.amzn2023 | [ALAS2023-2023-344](https://patchblox.com/security/data/fix/linux/alas2023-2023-344.md) | Sep 14, 2023 |
| Linux | nodejs RHEL 8 | 1:18.14.2-3.module+el8.8.0+19021+4b8b11cc | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs RHEL 9 | 1:16.19.1-2.el9_2 | [RHSA-2023:3586](https://patchblox.com/security/data/fix/linux/rhsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs almalinux 8 | 1:18.14.2-3.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs almalinux 9 | 1:16.19.1-2.el9_2 | [ALSA-2023:3586](https://patchblox.com/security/data/fix/linux/alsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs ol 8 | 1:18.14.2-3.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs ol 9 | 1:16.19.1-2.el9_2 | [ELSA-2023-3586](https://patchblox.com/security/data/fix/linux/elsa-2023-3586.md) | Jun 15, 2023 |
| Linux | nodejs rocky 8 | 1:18.14.2-3.module+el8.8.0+1337+7ea46b57 | [RLSA-2023:4035](https://patchblox.com/security/data/fix/linux/rlsa-2023-4035.md) | Aug 31, 2023 |
| Linux | nodejs-devel RHEL 8 | 1:18.14.2-3.module+el8.8.0+19021+4b8b11cc | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-devel RHEL 9 | 1:18.14.2-3.module+el9.2.0.z+18964+42696395 | [RHSA-2023:3577](https://patchblox.com/security/data/fix/linux/rhsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-devel almalinux 8 | 1:18.14.2-3.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-devel almalinux 9 | 1:18.14.2-3.module_el9.2.0+30+e3312493 | [ALSA-2023:3577](https://patchblox.com/security/data/fix/linux/alsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-devel ol 8 | 1:18.14.2-3.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-devel ol 9 | 1:18.14.2-3.module+el9.2.0+21063+2bebdd12 | [ELSA-2023-3577](https://patchblox.com/security/data/fix/linux/elsa-2023-3577.md) | Jun 15, 2023 |
| Linux | nodejs-docs RHEL 8 | 1:18.14.2-3.module+el8.8.0+19021+4b8b11cc | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-docs RHEL 9 | 1:16.19.1-2.el9_2 | [RHSA-2023:3586](https://patchblox.com/security/data/fix/linux/rhsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-docs almalinux 8 | 1:18.14.2-3.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-docs almalinux 9 | 1:16.19.1-2.el9_2 | [ALSA-2023:3586](https://patchblox.com/security/data/fix/linux/alsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-docs ol 8 | 1:18.14.2-3.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-docs ol 9 | 1:16.19.1-2.el9_2 | [ELSA-2023-3586](https://patchblox.com/security/data/fix/linux/elsa-2023-3586.md) | Jun 15, 2023 |
| Linux | nodejs-full-i18n RHEL 8 | 1:18.14.2-3.module+el8.8.0+19021+4b8b11cc | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-full-i18n RHEL 9 | 1:16.19.1-2.el9_2 | [RHSA-2023:3586](https://patchblox.com/security/data/fix/linux/rhsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-full-i18n almalinux 8 | 1:18.14.2-3.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-full-i18n almalinux 9 | 1:16.19.1-2.el9_2 | [ALSA-2023:3586](https://patchblox.com/security/data/fix/linux/alsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-full-i18n ol 8 | 1:18.14.2-3.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-full-i18n ol 9 | 1:16.19.1-2.el9_2 | [ELSA-2023-3586](https://patchblox.com/security/data/fix/linux/elsa-2023-3586.md) | Jun 15, 2023 |
| Linux | nodejs-libs RHEL 9 | 1:16.19.1-2.el9_2 | [RHSA-2023:3586](https://patchblox.com/security/data/fix/linux/rhsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-libs almalinux 9 | 1:16.19.1-2.el9_2 | [ALSA-2023:3586](https://patchblox.com/security/data/fix/linux/alsa-2023-3586.md) | Jun 14, 2023 |
| Linux | nodejs-libs ol 9 | 1:16.19.1-2.el9_2 | [ELSA-2023-3586](https://patchblox.com/security/data/fix/linux/elsa-2023-3586.md) | Jun 15, 2023 |
| Linux | nodejs-nodemon RHEL 8 | 0:2.0.20-2.module+el8.8.0+18432+27f188ac | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-nodemon RHEL 9 | 0:2.0.20-2.module+el9.2.0.z+18497+a402347c | [RHSA-2023:3577](https://patchblox.com/security/data/fix/linux/rhsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-nodemon almalinux 8 | 2.0.20-2.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-nodemon almalinux 9 | 2.0.20-2.module_el9.2.0+29+de583a0b | [ALSA-2023:3577](https://patchblox.com/security/data/fix/linux/alsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-nodemon ol 8 | 0:2.0.20-2.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-nodemon ol 9 | 0:2.0.20-2.module+el9.2.0+21038+115df6a2 | [ELSA-2023-3577](https://patchblox.com/security/data/fix/linux/elsa-2023-3577.md) | Jun 15, 2023 |
| Linux | nodejs-nodemon rocky 8 | 0:2.0.20-2.module+el8.7.0+1177+510ae886 | [RLSA-2023:4035](https://patchblox.com/security/data/fix/linux/rlsa-2023-4035.md) | Aug 31, 2023 |
| Linux | nodejs-nodemon rocky 9 | 0:2.0.20-2.module+el9.6.0+32048+5323bb50 | [RLSA-2023:3577](https://patchblox.com/security/data/fix/linux/rlsa-2023-3577.md) | Jun 24, 2023 |
| Linux | nodejs-packaging RHEL 8 | 0:2021.06-4.module+el8.7.0+15582+19c314fa | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-packaging RHEL 9 | 0:2021.06-4.module+el9.1.0+15718+e52ec601 | [RHSA-2023:3577](https://patchblox.com/security/data/fix/linux/rhsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-packaging almalinux 8 | 2021.06-4.module_el8.7.0+3343+ea2b7901 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-packaging almalinux 9 | 2021.06-4.module_el9.1.0+13+d9a595ea | [ALSA-2023:3577](https://patchblox.com/security/data/fix/linux/alsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-packaging ol 8 | 0:2021.06-4.module+el8.7.0+20766+0a247725 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-packaging ol 9 | 0:2021.06-4.module+el9.1.0+20762+f52d7401 | [ELSA-2023-3577](https://patchblox.com/security/data/fix/linux/elsa-2023-3577.md) | Jun 15, 2023 |
| Linux | nodejs-packaging rocky 8 | 0:2021.06-4.module+el8.7.0+1072+5b168780 | [RLSA-2023:4035](https://patchblox.com/security/data/fix/linux/rlsa-2023-4035.md) | Aug 31, 2023 |
| Linux | nodejs-packaging rocky 9 | 0:2021.06-4.module+el9.5.0+31770+0da7192d | [RLSA-2023:3577](https://patchblox.com/security/data/fix/linux/rlsa-2023-3577.md) | Jun 24, 2023 |
| Linux | nodejs-packaging-bundler RHEL 8 | 0:2021.06-4.module+el8.7.0+15582+19c314fa | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-packaging-bundler RHEL 9 | 0:2021.06-4.module+el9.1.0+15718+e52ec601 | [RHSA-2023:3577](https://patchblox.com/security/data/fix/linux/rhsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-packaging-bundler almalinux 8 | 2021.06-4.module_el8.7.0+3343+ea2b7901 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | nodejs-packaging-bundler almalinux 9 | 2021.06-4.module_el9.1.0+13+d9a595ea | [ALSA-2023:3577](https://patchblox.com/security/data/fix/linux/alsa-2023-3577.md) | Jun 14, 2023 |
| Linux | nodejs-packaging-bundler ol 8 | 0:2021.06-4.module+el8.7.0+20766+0a247725 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | nodejs-packaging-bundler ol 9 | 0:2021.06-4.module+el9.1.0+20762+f52d7401 | [ELSA-2023-3577](https://patchblox.com/security/data/fix/linux/elsa-2023-3577.md) | Jun 15, 2023 |
| Linux | npm RHEL 8 | 1:9.5.0-1.18.14.2.3.module+el8.8.0+19021+4b8b11cc | [RHSA-2023:4035](https://patchblox.com/security/data/fix/linux/rhsa-2023-4035.md) | Jul 12, 2023 |
| Linux | npm RHEL 9 | 1:8.19.3-1.16.19.1.2.el9_2 | [RHSA-2023:3586](https://patchblox.com/security/data/fix/linux/rhsa-2023-3586.md) | Jun 14, 2023 |
| Linux | npm almalinux 8 | 1:9.5.0-1.18.14.2.3.module_el8.8.0+3587+ee652244 | [ALSA-2023:4035](https://patchblox.com/security/data/fix/linux/alsa-2023-4035.md) | Jul 12, 2023 |
| Linux | npm almalinux 9 | 1:8.19.3-1.16.19.1.2.el9_2 | [ALSA-2023:3586](https://patchblox.com/security/data/fix/linux/alsa-2023-3586.md) | Jun 14, 2023 |
| Linux | npm ol 8 | 1:9.5.0-1.18.14.2.3.module+el8.8.0+21122+857852f8 | [ELSA-2023-4035](https://patchblox.com/security/data/fix/linux/elsa-2023-4035.md) | Jul 19, 2023 |
| Linux | npm ol 9 | 1:8.19.3-1.16.19.1.2.el9_2 | [ELSA-2023-3586](https://patchblox.com/security/data/fix/linux/elsa-2023-3586.md) | Jun 15, 2023 |

---

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