---
cve: "CVE-2023-50269"
severity: "HIGH"
cvss: 8.6
epss: "57.6%"
vendor: "squid-cache"
kev: false
exploited: false
published: "2023-12-14 18:15:45"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T09:32:43+02:00"
---

# CVE-2023-50269

> 8.6 HIGH · 🧪 PoC

## Beschreibung

Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. 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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- e8118a7381213f5cfcdeb4cec1d2d854bfd261c8 (Commit)

## Referenzen

- <https://github.com/squid-cache/squid/security/advisories/GHSA-wgq4-4cfg-c4x3>
- <http://www.squid-cache.org/Versions/v5/SQUID-2023_10.patch>
- <http://www.squid-cache.org/Versions/v6/SQUID-2023_10.patch>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/>
- <https://lists.debian.org/debian-lts-announce/2024/01/msg00003.html>
- <https://security.netapp.com/advisory/ntap-20240119-0005/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-50269) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_