---
cve: "CVE-2009-2473"
severity: "LOW"
cvss: 3.1
epss: "8.4%"
vendor: "n/a"
kev: false
exploited: false
published: "2009-08-21 17:00:00"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:48:43+02:00"
---

# CVE-2009-2473

> 3.1 LOW

## Beschreibung

neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

## Exploit-Evidenz

- [EDB-10206 — Expat 2.0.1 - UTF-8 Character XML Parsing Remote Denial of Service](https://www.exploit-db.com/exploits/10206) ✅

## Referenzen

- <http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html>
- <https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461>
- <http://support.apple.com/kb/HT4435>
- <http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html>
- <http://www.vupen.com/english/advisories/2009/2341>
- <http://www.mandriva.com/security/advisories?name=MDVSA-2009:221>
- <http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html>
- <http://rhn.redhat.com/errata/RHSA-2013-0131.html>
- <http://secunia.com/advisories/36371>
- <https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html>
- <https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html>
- <https://exchange.xforce.ibmcloud.com/vulnerabilities/52633>
- <http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2009-2473) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_