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CVE-2020-28242

An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk bef…

Impact

An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.

Affected products

VendorProductAffected versions
AsteriskCertified Asterisk
through 16.8.0
SangomaAsterisk
from 13.0 before 13.37.1
from 16.0 before 16.14.1
from 17.0 before 17.8.1
from 18.0 before 18.0.1
FedoraprojectFedora
Version 33
DebianDebian Linux
Version 9.0

Weakness classification

CWE-674

References