|Date: (C)2011-07-06 (M)2017-08-29|
|CVSS Score: 5.0||Access Vector: NETWORK|
|Exploitability Subscore: 10.0||Access Complexity: LOW|
|Impact Subscore: 2.9||Authentication: NONE|
| ||Confidentiality: NONE|
| ||Integrity: NONE|
| ||Availability: PARTIAL|
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 126.96.36.199.1 and 1.8.x before 188.8.131.52 does not properly handle '\0' characters in SIP packets, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted packet.