CVE-2019-15297

Name: CVE-2019-15297
Creator: NVD / NIST
Published: 2019-09-09T21:15:10.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 3.48%

Last modified Jun 17, 2026

CVE-2019-15297 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. res_pjsip_t38 in Sangoma Asterisk 15.x before 15.7.4 and 16.x before 16.5.1 allows an attacker to trigger a crash by sending a declined stream in a response to a T.38 re-invite initiated by Asterisk. The crash occurs because of a NULL session media object dereference.. EPSS estimates a 3.48% chance of exploitation in the next 30 days.

Description

res_pjsip_t38 in Sangoma Asterisk 15.x before 15.7.4 and 16.x before 16.5.1 allows an attacker to trigger a crash by sending a declined stream in a response to a T.38 re-invite initiated by Asterisk. The crash occurs because of a NULL session media object dereference.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

3.48%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Digium	Asterisk	>= 15.0.0, <= 15.7.3
Digium	Asterisk	>= 16.0.0, <= 16.5.0

References

http://downloads.asterisk.org/pub/security/AST-2019-004.htmlPatch, Vendor Advisory
http://packetstormsecurity.com/files/154371/Asterisk-Project-Security-Advisory-AST-2019-004.htmlPatch, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161671/Asterisk-Project-Security-Advisory-AST-2021-006.html
http://seclists.org/fulldisclosure/2021/Mar/5
http://downloads.asterisk.org/pub/security/AST-2019-004.htmlPatch, Vendor Advisory
http://packetstormsecurity.com/files/154371/Asterisk-Project-Security-Advisory-AST-2019-004.htmlPatch, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161671/Asterisk-Project-Security-Advisory-AST-2021-006.html
http://seclists.org/fulldisclosure/2021/Mar/5

Timeline

Published: Sep 9, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-15297?

How severe is CVE-2019-15297?

CVE-2019-15297 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.48% probability of exploitation in the next 30 days.

How do I fix CVE-2019-15297?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-15297?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST