CVE catalog
CVE-2023-49286
squid: CVE-2023-49286
- 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
- 10.35% · Oct 25, 2026
Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
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 | 6.5-r0 | fixed |
| Alpine | squid | 3.20 | 6.5-r0 | fixed |
| Alpine | squid | 3.21 | 6.5-r0 | fixed |
| Alpine | squid | 3.22 | 6.5-r0 | fixed |
| Alpine | squid | 3.23 | 6.5-r0 | fixed |
| Alpine | squid | 3.24 | 6.5-r0 | 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 | 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 | vulnerable |
| Ubuntu | squid | 20.04 | 4.10-1ubuntu1.9 | 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 | vulnerable |
| Ubuntu | squid | 22.04 | 5.7-0ubuntu0.22.04.3 | fixed |
| Ubuntu | squid | 24.04 | 6.1-2ubuntu1 | vulnerable |
| Ubuntu | squid | 24.04 | 6.1-2ubuntu2 | vulnerable |
| Ubuntu | squid | 24.04 | 6.5-1ubuntu1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | squid | source | sid | 6.5-1 | low | Not reported | Not reported |
| Debian | squid | source | forky | 6.5-1 | low | Not reported | Not reported |
| Debian | squid | source | trixie | 6.5-1 | low | Not reported | Not reported |
| Debian | squid | source | bookworm | 5.7-2+deb12u1 | not yet assigned | Not reported | Not reported |
| Alpine | squid | apk | 3.19 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Alpine | squid | apk | 3.20 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Alpine | squid | apk | 3.21 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Alpine | squid | apk | 3.22 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Alpine | squid | apk | 3.23 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Alpine | squid | apk | 3.24 | 6.5-r0 | Not reported | ALPINE-CVE-2023-49286 | Not reported |
| Ubuntu | squid3 | deb | pro | 3.5.27-1ubuntu1.14+esm2 | Not reported | UBUNTU-CVE-2023-49286 | Not reported |
| Ubuntu | squid | deb | 20.04 | 4.10-1ubuntu1.9 | Not reported | UBUNTU-CVE-2023-49286 | Not reported |
| Ubuntu | squid | deb | 22.04 | 5.7-0ubuntu0.22.04.3 | Not reported | UBUNTU-CVE-2023-49286 | Not reported |
| Ubuntu | squid | deb | 24.04 | 6.5-1ubuntu1 | Not reported | UBUNTU-CVE-2023-49286 | 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-2023-49286]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-49286]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-49286]
- [https://security-tracker.debian.org/tracker/CVE-2023-49286]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-49286.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1248.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]