# CVE-2023-46728: libecap: Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Sec... CVE-2023-46728 is fixed in 11 products on 1 platform, first by squid 3.5.27-1ubuntu1.14+esm1, released November 6, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-46728 - Priority: High - CVSS: 7.5 (Important) - EPSS: 0.0378 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Nov 6, 2023 ## Description Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Security Fix(es): * squid: Denial of Service in SSL Certificate validation (CVE-2023-46724) * squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728) * squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285) * squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286) 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 | libecap RHEL 8 | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | [RHSA-2024:0046](https://patchblox.com/security/data/fix/linux/rhsa-2024-0046.md) | Jan 3, 2024 | | Linux | libecap almalinux 8 | 1.0.1-2.module_el8.6.0+2741+01592ae8 | [ALSA-2024:0046](https://patchblox.com/security/data/fix/linux/alsa-2024-0046.md) | Jan 3, 2024 | | Linux | libecap ol 8 | 0:1.0.1-2.module+el8.9.0+90083+f7556140 | [ELSA-2024-0046](https://patchblox.com/security/data/fix/linux/elsa-2024-0046.md) | Jan 4, 2024 | | Linux | libecap rocky 8 | 0:1.0.1-2.module+el8.9.0+1437+df5ea8f0 | [RLSA-2024:0046](https://patchblox.com/security/data/fix/linux/rlsa-2024-0046.md) | Jan 9, 2024 | | Linux | libecap-devel RHEL 8 | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | [RHSA-2024:0046](https://patchblox.com/security/data/fix/linux/rhsa-2024-0046.md) | Jan 3, 2024 | | Linux | libecap-devel almalinux 8 | 1.0.1-2.module_el8.6.0+2741+01592ae8 | [ALSA-2024:0046](https://patchblox.com/security/data/fix/linux/alsa-2024-0046.md) | Jan 3, 2024 | | Linux | libecap-devel ol 8 | 0:1.0.1-2.module+el8.9.0+90083+f7556140 | [ELSA-2024-0046](https://patchblox.com/security/data/fix/linux/elsa-2024-0046.md) | Jan 4, 2024 | | Linux | squid Debian 11.6 (bullseye) | 4.13-10+deb11u5 | [DLA-4312-1](https://patchblox.com/security/data/fix/linux/dla-4312-1.md) | Sep 27, 2025 | | Linux | squid Debian 12.15 (bookworm) | 5.7-2+deb12u5 | [DEBIAN-CVE-2023-46728](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46728.md) | Nov 6, 2023 | | Linux | squid Debian 13.5 (trixie) | 6.1-1 | [DEBIAN-CVE-2023-46728](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46728.md) | Nov 6, 2023 | | Linux | squid Debian 14 | 6.1-1 | [DEBIAN-CVE-2023-46728](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46728.md) | Nov 6, 2023 | | Linux | squid RHEL 8 | 7:4.15-7.module+el8.9.0+20975+25f17541.5 | [RHSA-2024:0046](https://patchblox.com/security/data/fix/linux/rhsa-2024-0046.md) | Jan 3, 2024 | | Linux | squid RHEL 9 | 7:5.5-6.el9_3.5 | [RHSA-2024:0071](https://patchblox.com/security/data/fix/linux/rhsa-2024-0071.md) | Jan 8, 2024 | | Linux | squid Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squid 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squid Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.8 | [squid 4.10-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-4.10-1ubuntu1.8.md) | Nov 6, 2023 | | Linux | squid Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squid 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squid-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | | Linux | squid almalinux 8 | 7:4.15-7.module_el8.9.0+3708+6acaac63.5 | [ALSA-2024:0046](https://patchblox.com/security/data/fix/linux/alsa-2024-0046.md) | Jan 3, 2024 | | Linux | squid almalinux 9 | 7:5.5-6.el9_3.5 | [ALSA-2024:0071](https://patchblox.com/security/data/fix/linux/alsa-2024-0071.md) | Jan 8, 2024 | | Linux | squid amzn 2023 | 7:5.8-1.amzn2023.0.2 | [ALAS2023-2023-429](https://patchblox.com/security/data/fix/linux/alas2023-2023-429.md) | Nov 9, 2023 | | Linux | squid ol 8 | 7:4.15-7.module+el8.9.0+90111+615ac445.5 | [ELSA-2024-0046](https://patchblox.com/security/data/fix/linux/elsa-2024-0046.md) | Jan 4, 2024 | | Linux | squid ol 9 | 7:5.5-6.0.1.el9_3.5 | [ELSA-2024-0071](https://patchblox.com/security/data/fix/linux/elsa-2024-0071.md) | Jan 10, 2024 | | Linux | squid rocky 8 | 7:4.15-7.module+el8.9.0+1568+6d4fd5d4.1 | [RLSA-2024:0046](https://patchblox.com/security/data/fix/linux/rlsa-2024-0046.md) | Jan 9, 2024 | | Linux | squid-cgi Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squid-cgi 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-cgi-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squid-cgi Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.8 | [squid-cgi 4.10-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-cgi-4.10-1ubuntu1.8.md) | Nov 6, 2023 | | Linux | squid-cgi Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squid-cgi 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squid-cgi-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | | Linux | squid-common Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squid-common 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-common-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squid-common Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.8 | [squid-common 4.10-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-common-4.10-1ubuntu1.8.md) | Nov 6, 2023 | | Linux | squid-common Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squid-common 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squid-common-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | | Linux | squid-debuginfo amzn 2023 | 7:5.8-1.amzn2023.0.2 | [ALAS2023-2023-429](https://patchblox.com/security/data/fix/linux/alas2023-2023-429.md) | Nov 9, 2023 | | Linux | squid-debugsource amzn 2023 | 7:5.8-1.amzn2023.0.2 | [ALAS2023-2023-429](https://patchblox.com/security/data/fix/linux/alas2023-2023-429.md) | Nov 9, 2023 | | Linux | squid-openssl Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squid-openssl 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squid-openssl-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | | Linux | squid-purge Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squid-purge 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-purge-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squid-purge Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.8 | [squid-purge 4.10-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-purge-4.10-1ubuntu1.8.md) | Nov 6, 2023 | | Linux | squid-purge Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squid-purge 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squid-purge-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | | Linux | squid3 Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squid3 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid3-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squidclient Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.14+esm1 | [squidclient 3.5.27-1ubuntu1.14+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squidclient-3.5.27-1ubuntu1.14-esm1.md) | Nov 6, 2023 | | Linux | squidclient Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.8 | [squidclient 4.10-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squidclient-4.10-1ubuntu1.8.md) | Nov 6, 2023 | | Linux | squidclient Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.2 | [squidclient 5.7-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-squidclient-5.7-0ubuntu0.22.04.2.md) | Nov 6, 2023 | --- Data as of 2026-11-08T00:53:09Z UTC. 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