CVE-2024-23638
Fixed in a distro release EPSS 60%CVSS 6.5
Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`.
Products: squid-cache squid
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 8 | libecap | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
| AlmaLinux 8 | libecap | 1.0.1-2.module_el8.6.0+3048+383bc947 |
| AlmaLinux 8 | libecap-devel | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
| AlmaLinux 8 | libecap-devel | 1.0.1-2.module_el8.6.0+3048+383bc947 |
| AlmaLinux 8 | squid | 7:4.15-10.module_el8.10.0+3916+ed00a4a0.3 |
| AlmaLinux 9 | squid | 7:5.5-13.el9_4 |
| Debian 11 | squid | 4.13-10+deb11u3 |
| Debian 12 | squid | 5.7-2+deb12u1 |
| Debian 13 | squid | 6.6-1 |
| Debian 14 | squid | 6.6-1 |
| Red Hat Enterprise Linux 8 | libecap | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 |
| Red Hat Enterprise Linux 8 | libecap-debuginfo | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 |
| Red Hat Enterprise Linux 8 | libecap-debugsource | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 |
| Red Hat Enterprise Linux 8 | libecap-devel | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 |
| Red Hat Enterprise Linux 8 | squid | 7:4.15-10.module+el8.10.0+22489+b920747d.3 |
| Red Hat Enterprise Linux 8 | squid-debuginfo | 7:4.15-10.module+el8.10.0+22489+b920747d.3 |
| Red Hat Enterprise Linux 8 | squid-debugsource | 7:4.15-10.module+el8.10.0+22489+b920747d.3 |
| Red Hat Enterprise Linux 9 | squid | 7:5.5-13.el9_4 |
| Red Hat Enterprise Linux 9 | squid-debuginfo | 7:5.5-13.el9_4 |
| Red Hat Enterprise Linux 9 | squid-debugsource | 7:5.5-13.el9_4 |
| Rocky Linux 8 | libecap | 0:1.0.1-2.module+el8.9.0+1437+df5ea8f0 |
| Rocky Linux 8 | squid | 7:4.15-10.module+el8.10.0+1758+80ba9f4b |
| Rocky Linux 9 | squid | 7:5.5-13.el9_4 |
| SUSE Enterprise Storage 7.1 | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | squid | 5.7-150400.3.23.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | squid | 5.7-150400.3.23.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | squid | 5.7-150400.3.23.1 |
| SUSE Linux Enterprise Server 12 SP5 | squid | 4.17-4.41.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | squid | 5.7-150400.3.23.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | squid | 4.17-4.41.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | squid | 4.17-150000.5.49.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | squid | 5.7-150400.3.23.1 |
| SUSE Manager Proxy 4.3 | squid | 5.7-150400.3.23.1 |
| SUSE Manager Server 4.3 | squid | 5.7-150400.3.23.1 |
| Ubuntu 20.04 LTS | squid | 4.10-1ubuntu1.10 |
| Ubuntu 22.04 LTS | squid | 5.7-0ubuntu0.22.04.4 |
| Ubuntu Pro 16.04 LTS | squid3 | no fix |
| Ubuntu Pro 18.04 LTS | squid3 | no fix |
| openSUSE Leap 15.5 | squid | 5.7-150400.3.23.1 |
| openSUSE Tumbleweed | squid | 6.6-2.1 |