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Sid 1-25276

Message

SERVER-OTHER Digium Asterisk oversized Content-Length memory corruption attempt

Summary

Multiple stack consumption vulnerabilities in Asterisk Open Source 1.8.x before 1.8.19.1, 10.x before 10.11.1, and 11.x before 11.1.2; Certified Asterisk 1.8.11 before 1.8.11-cert10; and Asterisk Digiumphones 10.x-digiumphones before 10.11.1-digiumphones allow remote attackers to cause a denial of service (daemon crash) via TCP data using the (1) SIP, (2) HTTP, or (3) XMPP protocol.

Impact

CVSS base score 5.0 CVSS impact score 2.9 CVSS exploitability score 10.0 confidentialityImpact NONE integrityImpact NONE availabilityImpact NONE

CVE-2012-5976:

CVSS base score 5.0

CVSS impact score 2.9

CVSS exploitability score 10.0

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

CVE-2013-2686:

CVSS base score 5.0

CVSS impact score 2.9

CVSS exploitability score 10.0

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Detailed information

CVE-2012-5976: Multiple stack consumption vulnerabilities in Asterisk Open Source 1.8.x before 1.8.19.1, 10.x before 10.11.1, and 11.x before 11.1.2; Certified Asterisk 1.8.11 before 1.8.11-cert10; and Asterisk Digiumphones 10.x-digiumphones before 10.11.1-digiumphones allow remote attackers to cause a denial of service (daemon crash) via TCP data using the (1) SIP, (2) HTTP, or (3) XMPP protocol.

CVE-2013-2686: main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.

Affected systems

  • digium asterisk 1.8.0
  • digium asterisk 1.8.1
  • digium asterisk 1.8.1.1
  • digium asterisk 1.8.1.2
  • digium asterisk 1.8.2
  • digium asterisk 1.8.2.1
  • digium asterisk 1.8.2.2
  • digium asterisk 1.8.2.3
  • digium asterisk 1.8.2.4
  • digium asterisk 1.8.3
  • digium asterisk 1.8.3.1
  • digium asterisk 1.8.3.2
  • digium asterisk 1.8.3.3
  • digium asterisk 1.8.4
  • digium asterisk 1.8.4.1
  • digium asterisk 1.8.4.2
  • digium asterisk 1.8.4.3
  • digium asterisk 1.8.4.4
  • digium asterisk 1.8.5
  • digium asterisk 1.8.5.0
  • digium asterisk 1.8.6.0
  • digium asterisk 1.8.7.0
  • digium asterisk 1.8.7.1
  • digium asterisk 1.8.8.0
  • digium asterisk 1.8.8.1
  • digium asterisk 1.8.8.2
  • digium asterisk 1.8.9.0
  • digium asterisk 1.8.9.1
  • digium asterisk 1.8.9.2
  • digium asterisk 1.8.9.3
  • digium asterisk 1.8.10.0
  • digium asterisk 1.8.10.1
  • digium asterisk 1.8.11.0
  • digium asterisk 1.8.11.1
  • digium asterisk 1.8.12
  • digium asterisk 1.8.12.0
  • digium asterisk 1.8.13.0
  • digium asterisk 1.8.13.1
  • digium asterisk 1.8.14.0
  • digium asterisk 1.8.14.1
  • digium asterisk 1.8.15.0
  • digium asterisk 1.8.15.1
  • digium asterisk 1.8.16.0
  • digium asterisk 1.8.17.0
  • digium asterisk 1.8.18.0
  • digium asterisk 1.8.18.1
  • digium asterisk 1.8.19.0
  • digium asterisk 10.0.0
  • digium asterisk 10.0.1
  • digium asterisk 10.1.0
  • digium asterisk 10.1.1
  • digium asterisk 10.1.2
  • digium asterisk 10.1.3
  • digium asterisk 10.2.0
  • digium asterisk 10.2.1
  • digium asterisk 10.3.0
  • digium asterisk 10.3.1
  • digium asterisk 10.4.0
  • digium asterisk 10.4.1
  • digium asterisk 10.4.2
  • digium asterisk 10.5.0
  • digium asterisk 10.5.1
  • digium asterisk 10.5.2
  • digium asterisk 10.6.0
  • digium asterisk 10.6.1
  • digium asterisk 10.7.0
  • digium asterisk 10.7.1
  • digium asterisk 10.8.0
  • digium asterisk 10.9.0
  • digium asterisk 10.10.0
  • digium asterisk 10.10.1
  • digium asterisk 10.11.0
  • digium asterisk 11.0.0
  • digium asterisk 11.0.1
  • digium asterisk 11.0.2
  • digium asterisk 11.1.0
  • digium asterisk 11.1.1
  • digium certified_asterisk 1.8.11
  • asterisk certified_asterisk 1.8.15
  • asterisk certified_asterisk 1.8.15.0
  • asterisk digiumphones 10.0.0
  • asterisk digiumphones 10.1.0
  • asterisk digiumphones 10.2.0
  • asterisk digiumphones 10.3.0
  • asterisk digiumphones 10.4.0
  • asterisk digiumphones 10.5.0
  • asterisk digiumphones 10.6.0
  • asterisk digiumphones 10.7.0
  • asterisk digiumphones 10.8.0
  • asterisk digiumphones 10.9.0
  • asterisk digiumphones 10.10.0
  • asterisk digiumphones 10.11.0
  • asterisk digiumphones 10.12.0
  • asterisk digiumphones 10.12.1
  • asterisk open_source 1.8.0
  • asterisk open_source 1.8.1
  • asterisk open_source 1.8.1.1
  • asterisk open_source 1.8.1.2
  • asterisk open_source 1.8.2
  • asterisk open_source 1.8.2.1
  • asterisk open_source 1.8.2.2
  • asterisk open_source 1.8.2.3
  • asterisk open_source 1.8.2.4
  • asterisk open_source 1.8.3
  • asterisk open_source 1.8.3.1
  • asterisk open_source 1.8.3.2
  • asterisk open_source 1.8.3.3
  • asterisk open_source 1.8.4
  • asterisk open_source 1.8.4.1
  • asterisk open_source 1.8.4.2
  • asterisk open_source 1.8.4.3
  • asterisk open_source 1.8.4.4
  • asterisk open_source 1.8.5
  • asterisk open_source 1.8.5.0
  • asterisk open_source 1.8.6.0
  • asterisk open_source 1.8.7.0
  • asterisk open_source 1.8.7.1
  • asterisk open_source 1.8.7.2
  • asterisk open_source 1.8.8.0
  • asterisk open_source 1.8.8.1
  • asterisk open_source 1.8.8.2
  • asterisk open_source 1.8.9.0
  • asterisk open_source 1.8.9.1
  • asterisk open_source 1.8.9.2
  • asterisk open_source 1.8.9.3
  • asterisk open_source 1.8.10.0
  • asterisk open_source 1.8.10.1
  • asterisk open_source 1.8.11.0
  • asterisk open_source 1.8.11.1
  • asterisk open_source 1.8.12
  • asterisk open_source 1.8.12.0
  • asterisk open_source 1.8.12.1
  • asterisk open_source 1.8.12.2
  • asterisk open_source 1.8.13.0
  • asterisk open_source 1.8.13.1
  • asterisk open_source 1.8.14.0
  • asterisk open_source 1.8.14.1
  • asterisk open_source 1.8.15.0
  • asterisk open_source 1.8.15.1
  • asterisk open_source 1.8.16.0
  • asterisk open_source 1.8.17.0
  • asterisk open_source 1.8.18.0
  • asterisk open_source 1.8.18.1
  • asterisk open_source 1.8.19.0
  • asterisk open_source 1.8.19.1
  • asterisk open_source 1.8.20.0
  • asterisk open_source 1.8.20.1
  • asterisk open_source 10.0.0
  • asterisk open_source 10.0.1
  • asterisk open_source 10.1.0
  • asterisk open_source 10.1.1
  • asterisk open_source 10.1.2
  • asterisk open_source 10.1.3
  • asterisk open_source 10.2.0
  • asterisk open_source 10.2.1
  • asterisk open_source 10.3.0
  • asterisk open_source 10.3.1
  • asterisk open_source 10.4.0
  • asterisk open_source 10.4.1
  • asterisk open_source 10.4.2
  • asterisk open_source 10.5.0
  • asterisk open_source 10.5.1
  • asterisk open_source 10.5.2
  • asterisk open_source 10.6.0
  • asterisk open_source 10.6.1
  • asterisk open_source 10.7.0
  • asterisk open_source 10.7.1
  • asterisk open_source 10.8.0
  • asterisk open_source 10.9.0
  • asterisk open_source 10.10.0
  • asterisk open_source 10.10.1
  • asterisk open_source 10.11.0
  • asterisk open_source 10.11.1
  • asterisk open_source 10.12.0
  • asterisk open_source 10.12.1
  • asterisk open_source 11.0.0
  • asterisk open_source 11.0.1
  • asterisk open_source 11.0.2
  • asterisk open_source 11.1.0
  • asterisk open_source 11.1.1
  • asterisk open_source 11.1.2
  • asterisk open_source 11.2.0
  • asterisk open_source 11.2.1

Ease of attack

CVE-2012-5976:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

CVE-2013-2686:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References

  • downloads.Asterisk.org/pub/security/AST-2013-002.html
  • downloads.asterisk.org/pub/security/AST-2012-014