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

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CVE-2011-1753

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
21/06/2011
Last modified:
11/04/2025

Description

expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect recursion during entity expansion, which allows remote 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.

Impact

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

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:* 2.1.6 (including)
cpe:2.3:a:process-one:ejabberd:0.9:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:0.9.8:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:1.1.14:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:2.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:process-one:ejabberd:2.0.0:rc1:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools