ejabberd client2server denial of service

ejabberd-client2server-dos (56025) The risk level is classified as MediumMedium Risk


ejabberd is vulnerable to a denial of service, caused by an error in the client2server message queue. By sending multiple client2server messages, a remote attacker could overload the c2s message queue and cause the node to crash.


Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Denial of Service


Upgrade to the latest version of ejabberd (2.1.3 or later), available from the ProcessOne Web site. See References.


  • ProcessOne Web site: All Projects : ejabberd development : ejabberd 2.1.3 (Fix For Version) .
  • BID-38003: ejabberd 'client2server' Message Remote Denial of Service Vulnerability
  • CVE-2010-0305: ejabberd_c2s.erl in ejabberd before 2.1.3 allows remote attackers to cause a denial of service (daemon crash) via a large number of c2s (aka client2server) messages that trigger a queue overload.
  • DSA-2033: ejabberd -- heap overflow
  • OSVDB ID: 62066: ejabberd ejabberd_c2s.erl c2s Message Saturation Remote DoS
  • SA38337: ejabberd Message Queue Denial of Service

Platforms Affected:

  • Debian Debian Linux 5.0
  • Process-One ejabberd 2.1.2


Jan 29, 2010

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page