CVE-2020-35776: A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by…

PriorityP335medium6.5CVSS 3.1

AVNACLPRNUIRSUCNINAH

EPSS

3.91%

89.0th percentile

A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	asterisk	< asterisk 1:16.16.1~dfsg-1 (bullseye)	asterisk 1:16.16.1~dfsg-1 (bullseye)
digium	asterisk	>= 0 < 1:16.16.1~dfsg-1	1:16.16.1~dfsg-1
digium	asterisk	13.0.0 – 13.38.1	—
digium	asterisk	16.0.0 – 16.15.1	—
digium	asterisk	17.0.0 – 17.9.1	—
digium	asterisk	18.0 – 18.1.1	—

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

osv6.5MEDIUM

vendor_debian6.5MEDIUM

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