// For flags

CVE-2011-1755

jabberd: DoS via the XML "billion laughs attack"

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

jabberd2 before 2.2.14 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.

jabberd2 antes de v2.2.14 no detecta correctamente la recursividad durante la expansión de la entidad, lo que permite a atacantes remotos provocar una denegación de servicio ( consumo de memoria y CPU ) a través de un documento XML manipulado que contiene un gran número de referencias a entidades anidadas, un problema similar a CVE-2003-1564.

This package provides jabberd 2, an Extensible Messaging and Presence Protocol server used for XML based communication. It was found that the jabberd daemon did not properly detect recursion during entity expansion. A remote attacker could provide a specially-crafted XML file containing a large number of nested entity references, which once processed by the jabberd daemon, could lead to a denial of service.

*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
  • 2011-04-19 CVE Reserved
  • 2011-06-17 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Jabberd2
Search vendor "Jabberd2"
 Jabberd2
Search vendor "Jabberd2" for product "Jabberd2"
 < 2.2.14
Search vendor "Jabberd2" for product "Jabberd2" and version " < 2.2.14"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 13
Search vendor "Fedoraproject" for product "Fedora" and version "13"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 14
Search vendor "Fedoraproject" for product "Fedora" and version "14"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 15
Search vendor "Fedoraproject" for product "Fedora" and version "15"
-
Affected
Apple
Search vendor "Apple"
 Mac Os X
Search vendor "Apple" for product "Mac Os X"
 < 10.6.8
Search vendor "Apple" for product "Mac Os X" and version " < 10.6.8"
-
Affected
Apple
Search vendor "Apple"
 Mac Os X
Search vendor "Apple" for product "Mac Os X"
 >= 10.7.0 < 10.7.2
Search vendor "Apple" for product "Mac Os X" and version " >= 10.7.0 < 10.7.2"
-
Affected
Apple
Search vendor "Apple"
 Mac Os X Server
Search vendor "Apple" for product "Mac Os X Server"
 < 10.6.8
Search vendor "Apple" for product "Mac Os X Server" and version " < 10.6.8"
-
Affected
Apple
Search vendor "Apple"
 Mac Os X Server
Search vendor "Apple" for product "Mac Os X Server"
 >= 10.7.0 < 10.7.2
Search vendor "Apple" for product "Mac Os X Server" and version " >= 10.7.0 < 10.7.2"
-
Affected