---
cve: "CVE-2009-4491"
severity: "CRITICAL"
cvss: 9.8
epss: "13.7%"
vendor: "n/a"
kev: false
exploited: false
published: "2010-01-13 20:30:00"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-10T07:25:31+02:00"
---

# CVE-2009-4491

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

thttpd 2.25b0 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Exploit-Evidenz

- [EDB-33499 — thttpd 2.24 - HTTP Request Escape Sequence Terminal Command Injection](https://www.exploit-db.com/exploits/33499) ✅

## Referenzen

- <http://www.ush.it/team/ush/hack_httpd_escape/adv.txt>
- <http://www.securityfocus.com/archive/1/508830/100/0/threaded>
- <http://seclists.org/fulldisclosure/2023/Nov/13>
- <http://packetstormsecurity.com/files/175949/m-privacy-TightGate-Pro-Code-Execution-Insecure-Permissions.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2009-4491/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_