CVE-2020-35776

2021-02-1820:15:12

Debian Security Bug Tracker

security-tracker.debian.org

buffer overflow

res_pjsip_diversion.c

sangoma asterisk

remote attack

sip 181 responses

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.008

Percentile

82.1%

JSON

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.

OSVersionArchitecturePackageVersionFilename
Debian11allasterisk< 1:16.16.1~dfsg-1asterisk_1:16.16.1~dfsg-1_all.deb
Debian999allasterisk< 1:16.16.1~dfsg-1asterisk_1:16.16.1~dfsg-1_all.deb