Signature Detail

VOIP: Digium Asterisk SIP Invalid SDP Media Descriptions Denial of Service

This signature detects attempts to exploit a known vulnerability against Digium Asterisk. A successful attack can result in a denial-of-service condition.

Extended Description

The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.x before 1.8.23.1, 10.x before 10.12.3, and 11.x before 11.5.1; Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.3-digiumphones allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an invalid SDP that defines a media description before the connection description in a SIP request.

Affected Products

• digium asterisk 10.10.0 (rc1)
• digium asterisk 10.10.0 (rc2)
• digium asterisk 10.11.0 (rc1)
• digium asterisk 10.11.0 (rc2)
• digium asterisk 10.11.0 (rc3)
• digium asterisk 10.12.0 (rc1)
• digium asterisk 10.12.0 (rc2)
• digium asterisk 10.12.1
• digium asterisk 10.12.2
• digium asterisk 11.0.0 (beta1)
• digium asterisk 11.0.0 (beta2)
• digium asterisk 11.0.0 (rc1)
• digium asterisk 11.0.0 (rc2)
• digium asterisk 11.0.1
• digium asterisk 11.0.2
• digium asterisk 11.1.0 (rc1)
• digium asterisk 11.1.0 (rc3)
• digium asterisk 11.1.1
• digium asterisk 11.1.2
• digium asterisk 11.2.0 (rc1)
• digium asterisk 11.2.0 (rc2)
• digium asterisk 11.3.0 (rc1)
• digium asterisk 11.3.0 (rc2)
• digium asterisk 11.4.0 (rc1)
• digium asterisk 11.4.0 (rc2)
• digium asterisk 11.4.0 (rc3)
• digium asterisk 11.5.0 (rc1)
• digium asterisk 11.5.0 (rc2)
• digium asterisk 11.5.1
• digium asterisk 1.8.17.0 (rc1)
• digium asterisk 1.8.17.0 (rc2)
• digium asterisk 1.8.17.0 (rc3)
• digium asterisk 1.8.18.0 (rc1)
• digium asterisk 1.8.18.1
• digium asterisk 1.8.19.0 (rc1)
• digium asterisk 1.8.19.0 (rc3)
• digium asterisk 1.8.19.1
• digium asterisk 1.8.20.0 (rc1)
• digium asterisk 1.8.20.0 (rc2)
• digium asterisk 1.8.21.0 (rc1)
• digium asterisk 1.8.21.0 (rc2)
• digium asterisk 1.8.22.0 (rc1)
• digium asterisk 1.8.22.0 (rc2)
• digium asterisk 1.8.23.0 (rc1)
• digium asterisk 1.8.23.0 (rc2)
• digium asterisk_digiumphones 10.0.0 (rc1)
• digium asterisk_digiumphones 10.0.0 (rc2)
• digium asterisk_digiumphones 10.11.0 (rc1)
• digium asterisk_digiumphones 10.11.0 (rc2)
• digium asterisk_digiumphones 10.11.0 (rc3)
• digium asterisk_digiumphones 10.12.0 (rc1)
• digium asterisk_digiumphones 10.12.0 (rc2)
• digium asterisk_digiumphones 10.12.1
• digium asterisk_digiumphones 10.12.2
• digium certified_asterisk 11.2.0 (cert1)
• digium certified_asterisk 11.2.0 (rc1)
• digium certified_asterisk 11.2.0 (rc2)
• digium certified_asterisk 1.8.15 (cert1)
• digium certified_asterisk 1.8.15 (cert1-rc1)
• digium certified_asterisk 1.8.15 (cert1-rc2)
• digium certified_asterisk 1.8.15 (cert1-rc3)
• digium certified_asterisk 1.8.15 (cert2)
• digium certified_asterisk 1.8.15 (rc1)

References

• BugTraq: 62022
• CVE: CVE-2013-5642