Vulnerability Name:

CCN-112251

Published:2016-04-14
Updated:2016-04-14
Summary:Asterisk is vulnerable to a denial of service, caused by an error when processing an incoming REGISTER request containing a Contact header with a long URI. By sending specially crafted REGISTER requests, a remote attacker could exploit this vulnerability to cause the service to crash.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Consequences:Denial of Service
References:Source: CCN
Type: Asterisk Project Security Advisory - AST-2016-004
Long Contact URIs in REGISTER requests can crash Asterisk

Source: XF
Type: UNKNOWN
asterisk-long-contact-dos(112251)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:digium:asterisk:11.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:digium:asterisk:12.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:digium:asterisk:13.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    digium asterisk 11.0.0
    digium asterisk 12.3.0
    digium asterisk 13.0.0