---
cve: "CVE-2017-9233"
severity: "LOW"
cvss: 3.1
epss: "8.7%"
vendor: "n/a"
kev: false
exploited: false
published: "2017-07-25 20:29:00"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T08:04:39+02:00"
---

# CVE-2017-9233

> 3.1 LOW · 🧪 PoC

## Beschreibung

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

## Patch verfügbar (OSV)

- ca079a3ea30098aff3197c559a0e32d42dda6d84 (Commit)
- 17bf6b4671ec02d80ad29b278639d5307baddeb5 (Commit)

## Referenzen

- <https://support.apple.com/HT208144>
- <https://libexpat.github.io/doc/cve-2017-9233/>
- <https://github.com/libexpat/libexpat/blob/master/expat/Changes>
- <http://www.securitytracker.com/id/1039427>
- <https://support.apple.com/HT208113>
- <https://support.apple.com/HT208112>
- <https://support.apple.com/HT208115>
- <http://www.debian.org/security/2017/dsa-3898>
- <http://www.securityfocus.com/bid/99276>
- <http://www.openwall.com/lists/oss-security/2017/06/17/7>
- <https://support.f5.com/csp/article/K03244804>
- <https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E>
- <https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2017-9233) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_