CVE catalog
CVE-2023-46724
squid: CVE-2023-46724
- Severity
- High · CVSS 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.05% · Oct 25, 2026
Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | squid | sid | 7.7-1 | fixed |
| Debian | squid | forky | 7.7-1 | fixed |
| Debian | squid | trixie | 6.13-2+deb13u3 | fixed |
| Debian | squid | trixie-security | 6.13-2+deb13u2 | fixed |
| Debian | squid | bookworm | 5.7-2+deb12u5 | fixed |
| Debian | squid | bookworm-security | 5.7-2+deb12u6 | fixed |
| Alpine | squid | 3.19 | 6.4-r0 | fixed |
| Alpine | squid | 3.20 | 6.4-r0 | fixed |
| Alpine | squid | 3.21 | 6.4-r0 | fixed |
| Alpine | squid | 3.22 | 6.4-r0 | fixed |
| Alpine | squid | 3.23 | 6.4-r0 | fixed |
| Alpine | squid | 3.24 | 6.4-r0 | fixed |
| Ubuntu | squid | 20.04 | 4.8-1ubuntu2 | vulnerable |
| Ubuntu | squid | 20.04 | 4.8-1ubuntu3 | vulnerable |
| Ubuntu | squid | 20.04 | 4.9-2ubuntu1 | vulnerable |
| Ubuntu | squid | 20.04 | 4.9-2ubuntu2 | vulnerable |
| Ubuntu | squid | 20.04 | 4.9-2ubuntu3 | vulnerable |
| Ubuntu | squid | 20.04 | 4.9-2ubuntu4 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.1 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.2 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.3 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.4 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.5 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.6 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.7 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.8 | fixed |
| Ubuntu | squid | 22.04 | 4.13-10ubuntu5 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu3 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.2 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.3 | vulnerable |
| Ubuntu | squid | 22.04 | 5.7-0ubuntu0.22.04.1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.7-0ubuntu0.22.04.2 | fixed |
| Opensuse | squid | tumbleweed | 6.4-1.1 | fixed |
| Suse | squid | linux enterprise module for server applications 15 sp4 | 5.7-150400.3.12.1 | fixed |
| Suse | squid | linux enterprise module for server applications 15 sp5 | 5.7-150400.3.12.1 | fixed |
| Opensuse | squid | leap 15.4 | 5.7-150400.3.12.1 | fixed |
| Opensuse | squid | leap 15.5 | 5.7-150400.3.12.1 | fixed |
| Suse | squid | linux enterprise high performance computing 15 sp1-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise high performance computing 15 sp2-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise high performance computing 15 sp3-espos | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise high performance computing 15 sp3-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server 15 sp1-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server 15 sp2-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server 15 sp3-ltss | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server for sap applications 15 sp1 | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server for sap applications 15 sp2 | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server for sap applications 15 sp3 | 4.17-150000.5.38.1 | fixed |
| Suse | squid | enterprise storage 7.1 | 4.17-150000.5.38.1 | fixed |
| Suse | squid | linux enterprise server 12 sp5 | 4.17-4.30.1 | fixed |
| Suse | squid | linux enterprise server for sap applications 12 sp5 | 4.17-4.30.1 | fixed |
| Ubuntu | squid3 | pro | 3.5.23-5ubuntu1 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.23-5ubuntu2 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.1 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.2 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.3 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.4 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.5 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.6 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.7 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.8 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.9 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.10 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.11 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.12 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.13 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm1 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm2 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm3 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm4 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm5 | vulnerable |
| Ubuntu | squid3 | pro | 3.5.27-1ubuntu1.14+esm6 | vulnerable |
| Ubuntu | squid | 22.04 | 4.13-10ubuntu5 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu3 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.2 | vulnerable |
| Ubuntu | squid | 22.04 | 5.2-1ubuntu4.3 | vulnerable |
| Ubuntu | squid | 22.04 | 5.7-0ubuntu0.22.04.1 | vulnerable |
| Ubuntu | squid | 22.04 | 5.7-0ubuntu0.22.04.2 | fixed |
| Ubuntu | squid | 24.04 | 6.1-2ubuntu1 | vulnerable |
| Ubuntu | squid | 24.04 | 6.1-2ubuntu2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | squid | source | sid | 6.5-1 | not yet assigned | Not reported | [1055252] |
| Debian | squid | source | forky | 6.5-1 | not yet assigned | Not reported | [1055252] |
| Debian | squid | source | trixie | 6.5-1 | not yet assigned | Not reported | [1055252] |
| Debian | squid | source | bookworm | 5.7-2+deb12u1 | not yet assigned | Not reported | [1055252] |
| Alpine | squid | apk | 3.19 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Alpine | squid | apk | 3.20 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Alpine | squid | apk | 3.21 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Alpine | squid | apk | 3.22 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Alpine | squid | apk | 3.23 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Alpine | squid | apk | 3.24 | 6.4-r0 | Not reported | ALPINE-CVE-2023-46724 | Not reported |
| Ubuntu | squid | deb | 20.04 | 4.10-1ubuntu1.8 | Not reported | USN-6500-1 | Not reported |
| Ubuntu | squid | deb | 22.04 | 5.7-0ubuntu0.22.04.2 | Not reported | USN-6500-1 | Not reported |
| Opensuse | squid | rpm | tumbleweed | 6.4-1.1 | Not reported | OPENSUSE-SU-2024:13398-1 | Not reported |
| Suse | squid | rpm | linux enterprise module for server applications 15 sp4 | 5.7-150400.3.12.1 | Not reported | SUSE-SU-2023:4380-1 | Not reported |
| Suse | squid | rpm | linux enterprise module for server applications 15 sp5 | 5.7-150400.3.12.1 | Not reported | SUSE-SU-2023:4380-1 | Not reported |
| Opensuse | squid | rpm | leap 15.4 | 5.7-150400.3.12.1 | Not reported | SUSE-SU-2023:4380-1 | Not reported |
| Opensuse | squid | rpm | leap 15.5 | 5.7-150400.3.12.1 | Not reported | SUSE-SU-2023:4380-1 | Not reported |
| Suse | squid | rpm | linux enterprise high performance computing 15 sp1-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise high performance computing 15 sp2-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise high performance computing 15 sp3-espos | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise high performance computing 15 sp3-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server 15 sp1-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server 15 sp2-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server 15 sp3-ltss | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server for sap applications 15 sp1 | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server for sap applications 15 sp2 | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server for sap applications 15 sp3 | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | enterprise storage 7.1 | 4.17-150000.5.38.1 | Not reported | SUSE-SU-2023:4384-1 | Not reported |
| Suse | squid | rpm | linux enterprise server 12 sp5 | 4.17-4.30.1 | Not reported | SUSE-SU-2023:4381-1 | Not reported |
| Suse | squid | rpm | linux enterprise server for sap applications 12 sp5 | 4.17-4.30.1 | Not reported | SUSE-SU-2023:4381-1 | Not reported |
| Ubuntu | squid | deb | 22.04 | 5.7-0ubuntu0.22.04.2 | Not reported | UBUNTU-CVE-2023-46724 | Not reported |
| Ubuntu | squid | deb | 24.04 | 6.1-2ubuntu2 | Not reported | UBUNTU-CVE-2023-46724 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2024_0046.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2023-46724]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-46724]
- [https://osv.dev/vulnerability/DSA-5637-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4380-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4381-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4384-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-46724]
- [https://osv.dev/vulnerability/USN-6500-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13398-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-46724]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-46724.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2801.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]