Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Network
0

CVE-2019-13161

Disclosure Date: July 12, 2019 •
CVE-2019-13161 CVSS v3 Base Score: 5.3
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).

Add Assessment

No one has assessed this topic. Be the first to add your voice to the community.

CVSS V3 Severity and Metrics
Base Score:
5.3 Medium
Impact Score:
3.6
Exploitability Score:
1.6
Vector:
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • debian,
  • digium

Products

  • asterisk,
  • certified asterisk 1.8.0.0,
  • certified asterisk 1.8.1.0,
  • certified asterisk 1.8.10.0,
  • certified asterisk 1.8.11,
  • certified asterisk 1.8.11.0,
  • certified asterisk 1.8.12.0,
  • certified asterisk 1.8.13.0,
  • certified asterisk 1.8.14.0,
  • certified asterisk 1.8.15,
  • certified asterisk 1.8.2.0,
  • certified asterisk 1.8.28,
  • certified asterisk 1.8.28.0,
  • certified asterisk 1.8.3.0,
  • certified asterisk 1.8.4.0,
  • certified asterisk 1.8.5.0,
  • certified asterisk 1.8.6.0,
  • certified asterisk 1.8.7.0,
  • certified asterisk 1.8.8.0,
  • certified asterisk 1.8.9.0,
  • certified asterisk 11.0.0,
  • certified asterisk 11.1.0,
  • certified asterisk 11.2,
  • certified asterisk 11.3.0,
  • certified asterisk 11.4.0,
  • certified asterisk 11.5.0,
  • certified asterisk 11.6,
  • certified asterisk 11.6.0,
  • certified asterisk 13.1,
  • certified asterisk 13.1.0,
  • certified asterisk 13.13,
  • certified asterisk 13.13-cert2,
  • certified asterisk 13.18,
  • certified asterisk 13.21,
  • certified asterisk 13.8,
  • certified asterisk 13.8.0,
  • debian linux 8.0,
  • debian linux 9.0
Technical Analysis