// For flags

CVE-2009-2473

Expat 2.0.1 - UTF-8 Character XML Parsing Remote Denial of Service

Severity Score

4.3
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

neon, en versiones anteriores a la 0.28.6, cuando se usa expat, no detecta adecuadamente la recursividad en la expansión de una entidad, esto permite a atacantes dependientes del contexto provocar una denegación de servicio (consumo de la memoria y CPU), mediante un documento XML manipulado que contiene un gran número de referencias anidadas a entidades, una cuestión similar a CVE-2003-1564.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-07-15 CVE Reserved
  • 2009-08-21 CVE Published
  • 2009-11-12 First Exploit
  • 2023-03-07 EPSS Updated
  • 2024-08-07 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-399: Resource Management Errors
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Webdav
Search vendor "Webdav"
 Neon
Search vendor "Webdav" for product "Neon"
 0.28.6
Search vendor "Webdav" for product "Neon" and version "0.28.6"
-
Affected