CVE-2019-18976

HIGH
7.5
CVSS Score
Published: November 22, 2019 at 04:59 PM UTC
Updated: June 17, 2026 at 02:25 AM UTC
3 products affected across 2 vendorsDebian LinuxAsteriskCertified Asterisk

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Severity
HIGH7.5
Exploit prediction
EPSS 13%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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