Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2013-2503

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
11/03/2013
Last modified:
11/04/2025

Description

Privoxy before 3.0.21 does not properly handle Proxy-Authenticate and Proxy-Authorization headers in the client-server data stream, which makes it easier for remote HTTP servers to spoof the intended proxy service via a 407 (aka Proxy Authentication Required) HTTP status code.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:privoxy:privoxy:*:beta:*:*:*:*:*:* 3.0.20 (including)
cpe:2.3:a:privoxy:privoxy:2.9.0:pre-alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.1:pre-alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.2:pre-alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.3:pre-alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.11:alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.11:beta:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.11:pre-alpha:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.12:beta:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.13:beta:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.14:beta:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.16:*:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:2.9.18:*:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:3.0:*:*:*:*:*:*:*
cpe:2.3:a:privoxy:privoxy:3.0.2:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools