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CVE-2019-13161

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-ce…

Impact

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).

Affected products

VendorProductAffected versions
DigiumCertified Asterisk
Versions 1.8.0.0, 1.8.1.0, 1.8.2.0, 1.8.3.0, 1.8.4.0, 1.8.5.0
DigiumAsterisk
from 13.0.0 before 13.27.1
from 15.0.0 before 15.7.3
from 16.0.0 before 16.4.1
DebianDebian Linux
Versions 8.0, 9.0

Weakness classification

CWE-476

References