// For flags

CVE-2009-0478

Squid < 3.1 5 - HTTP Version Number Parsing Denial of Service

Severity Score

7.5
*CVSS v3

Exploit Likelihood

79.8%
*EPSS

Affected Versions

22
*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.

Squid versiones 2.7 hasta 2.7.STABLE5, versiones 3.0 hasta 3.0.STABLE12 y versiones 3.1 hasta 3.1.0.4, permiten a los atacantes remotos causar una denegación de servicio por medio de una petición HTTP con un número de versión no válido, lo que desencadena una aserción accesible en los archivos (1) HttpMsg.c y (2) HttpStatusLine.c.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-02-08 CVE Reserved
  • 2009-02-08 CVE Published
  • 2024-08-07 CVE Updated
  • 2024-08-07 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions (22)