CVE Vulnerability

CVE-2019-18976

An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.cybersecurity-help.cz/vdb/SB2019112218?affChecked=1 Third Party Advisory
https://www.asterisk.org/downloads/security-advisories Vendor Advisory
http://downloads.asterisk.org/pub/security/AST-2019-008.html Vendor Advisory
https://packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.html Third Party Advisory VDB Entry
https://seclists.org/fulldisclosure/2019/Nov/20 Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:*:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:cert2:*:*:*:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:cert3:*:*:*:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:*:*:*:*:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:cert4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2019-11-22 05:15

Updated : 2022-06-03 02:41

NVD link : CVE-2019-18976

Mitre link : CVE-2019-18976

Products Affected
No products.
CWE
CWE-476