Ubuntu.comUB:CVE-2019-18351CVE-2019-18351
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:P/A:N
An issue was discovered in channels/chan_sip.c in Sangoma Asterisk through
13.29.1, through 16.6.1, and through 17.0.0; and Certified Asterisk through
13.21-cert4. A SIP request can be sent to Asterisk that can change a SIP
peer’s IP address. A REGISTER does not need to occur, and calls can be
hijacked as a result. The only thing that needs to be known is the peer’s
name; authentication details such as passwords do not need to be known.
This vulnerability is only exploitable when the nat option is set to the
default, or auto_force_rport.
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:P/A:N