The SIP channel driver in Asterisk Open Source 1.4.x before 1.4.17, Business Edition before C.1.0-beta8, AsteriskNOW before beta7, Appliance Developer Kit before Asterisk 1.4 revision 95946, and Appliance s800i 1.0.x before 1.0.3.4 allows remote attackers to cause a denial of service (daemon crash) via a BYE message with an Also (Also transfer) header, which triggers a NULL pointer dereference.
| Software | From | Fixed in |
|---|---|---|
| asterisk / asterisknow | - | beta_6.x |
| asterisk / asterisk_appliance_developer_kit | - | 1.4_revision_95945.x |
| asterisk / s800i | - | 1.0.3.3.x |
| asterisk / asterisk_business_edition | - | c.1.0beta7.x |
| asterisk / open_source | - | 1.4.16.x |