medium
5.3
CWE
476
Advisory Published
Updated

CVE-2019-13161: Null Pointer Dereference

First published: Fri Jul 12 2019(Updated: )

An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Digium Asterisk Appliance Developer Kit=1.8.0.0
Digium Asterisk Appliance Developer Kit=1.8.0.0-beta1
Digium Asterisk Appliance Developer Kit=1.8.0.0-beta2
Digium Asterisk Appliance Developer Kit=1.8.0.0-beta3
Digium Asterisk Appliance Developer Kit=1.8.0.0-beta4
Digium Asterisk Appliance Developer Kit=1.8.0.0-beta5
Digium Asterisk Appliance Developer Kit=1.8.0.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.0.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.0.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.0.0-rc4
Digium Asterisk Appliance Developer Kit=1.8.0.0-rc5
Digium Asterisk Appliance Developer Kit=1.8.1.0
Digium Asterisk Appliance Developer Kit=1.8.1.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.2.0
Digium Asterisk Appliance Developer Kit=1.8.2.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.3.0
Digium Asterisk Appliance Developer Kit=1.8.3.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.3.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.3.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.4.0
Digium Asterisk Appliance Developer Kit=1.8.4.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.4.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.4.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.5.0
Digium Asterisk Appliance Developer Kit=1.8.5.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.6.0
Digium Asterisk Appliance Developer Kit=1.8.6.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.6.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.6.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.7.0
Digium Asterisk Appliance Developer Kit=1.8.7.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.7.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.8.0
Digium Asterisk Appliance Developer Kit=1.8.8.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.8.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.8.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.8.0-rc4
Digium Asterisk Appliance Developer Kit=1.8.8.0-rc5
Digium Asterisk Appliance Developer Kit=1.8.9.0
Digium Asterisk Appliance Developer Kit=1.8.9.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.9.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.9.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.10.0
Digium Asterisk Appliance Developer Kit=1.8.10.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.10.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.10.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.10.0-rc4
Digium Asterisk Appliance Developer Kit=1.8.11-cert
Digium Asterisk Appliance Developer Kit=1.8.11-cert1
Digium Asterisk Appliance Developer Kit=1.8.11-cert10
Digium Asterisk Appliance Developer Kit=1.8.11-cert2
Digium Asterisk Appliance Developer Kit=1.8.11-cert3
Digium Asterisk Appliance Developer Kit=1.8.11-cert3-rc1
Digium Asterisk Appliance Developer Kit=1.8.11-cert3-rc2
Digium Asterisk Appliance Developer Kit=1.8.11-cert4
Digium Asterisk Appliance Developer Kit=1.8.11-cert5
Digium Asterisk Appliance Developer Kit=1.8.11-cert5-rc1
Digium Asterisk Appliance Developer Kit=1.8.11-cert5-rc2
Digium Asterisk Appliance Developer Kit=1.8.11-cert6
Digium Asterisk Appliance Developer Kit=1.8.11-cert7
Digium Asterisk Appliance Developer Kit=1.8.11-cert8
Digium Asterisk Appliance Developer Kit=1.8.11-cert9
Digium Asterisk Appliance Developer Kit=1.8.11-cert9-rc1
Digium Asterisk Appliance Developer Kit=1.8.11.0
Digium Asterisk Appliance Developer Kit=1.8.11.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.11.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.11.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.12.0
Digium Asterisk Appliance Developer Kit=1.8.12.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.12.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.12.0-rc3
Digium Asterisk Appliance Developer Kit=1.8.13.0
Digium Asterisk Appliance Developer Kit=1.8.13.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.13.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.14.0-rc1
Digium Asterisk Appliance Developer Kit=1.8.14.0-rc2
Digium Asterisk Appliance Developer Kit=1.8.15
Digium Asterisk Appliance Developer Kit=1.8.15-cert1
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc1
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc2
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc3
Digium Asterisk Appliance Developer Kit=1.8.15-cert1_rc1
Digium Asterisk Appliance Developer Kit=1.8.15-cert1_rc2
Digium Asterisk Appliance Developer Kit=1.8.15-cert1_rc3
Digium Asterisk Appliance Developer Kit=1.8.15-cert2
Digium Asterisk Appliance Developer Kit=1.8.15-cert3
Digium Asterisk Appliance Developer Kit=1.8.15-cert4
Digium Asterisk Appliance Developer Kit=1.8.15-cert5
Digium Asterisk Appliance Developer Kit=1.8.15-cert6
Digium Asterisk Appliance Developer Kit=1.8.15-cert7
Digium Asterisk Appliance Developer Kit=1.8.28
Digium Asterisk Appliance Developer Kit=1.8.28-cert1
Digium Asterisk Appliance Developer Kit=1.8.28-cert1-rc1
Digium Asterisk Appliance Developer Kit=1.8.28-cert2
Digium Asterisk Appliance Developer Kit=1.8.28-cert2
Digium Asterisk Appliance Developer Kit=1.8.28-cert3
Digium Asterisk Appliance Developer Kit=1.8.28-cert4
Digium Asterisk Appliance Developer Kit=1.8.28-cert5
Digium Asterisk Appliance Developer Kit=1.8.28.0
Digium Asterisk Appliance Developer Kit=11.0.0
Digium Asterisk Appliance Developer Kit=11.0.0-rc1
Digium Asterisk Appliance Developer Kit=11.0.0-rc2
Digium Asterisk Appliance Developer Kit=11.1.0
Digium Asterisk Appliance Developer Kit=11.1.0-rc1
Digium Asterisk Appliance Developer Kit=11.1.0-rc2
Digium Asterisk Appliance Developer Kit=11.1.0-rc3
Digium Asterisk Appliance Developer Kit=11.2-cert1
Digium Asterisk Appliance Developer Kit=11.2-cert1-rc2
Digium Asterisk Appliance Developer Kit=11.2-cert2
Digium Asterisk Appliance Developer Kit=11.2-cert3
Digium Asterisk Appliance Developer Kit=11.3.0
Digium Asterisk Appliance Developer Kit=11.3.0-rc1
Digium Asterisk Appliance Developer Kit=11.3.0-rc2
Digium Asterisk Appliance Developer Kit=11.4.0
Digium Asterisk Appliance Developer Kit=11.4.0-rc1
Digium Asterisk Appliance Developer Kit=11.4.0-rc2
Digium Asterisk Appliance Developer Kit=11.4.0-rc3
Digium Asterisk Appliance Developer Kit=11.5.0
Digium Asterisk Appliance Developer Kit=11.5.0-rc1
Digium Asterisk Appliance Developer Kit=11.5.0-rc2
Digium Asterisk Appliance Developer Kit=11.6-cert1
Digium Asterisk Appliance Developer Kit=11.6-cert1
Digium Asterisk Appliance Developer Kit=11.6-cert1-rc1
Digium Asterisk Appliance Developer Kit=11.6-cert1-rc2
Digium Asterisk Appliance Developer Kit=11.6-cert1_rc1
Digium Asterisk Appliance Developer Kit=11.6-cert1_rc2
Digium Asterisk Appliance Developer Kit=11.6-cert10
Digium Asterisk Appliance Developer Kit=11.6-cert11
Digium Asterisk Appliance Developer Kit=11.6-cert12
Digium Asterisk Appliance Developer Kit=11.6-cert12
Digium Asterisk Appliance Developer Kit=11.6-cert13
Digium Asterisk Appliance Developer Kit=11.6-cert13
Digium Asterisk Appliance Developer Kit=11.6-cert14
Digium Asterisk Appliance Developer Kit=11.6-cert14
Digium Asterisk Appliance Developer Kit=11.6-cert14-rc1
Digium Asterisk Appliance Developer Kit=11.6-cert14-rc2
Digium Asterisk Appliance Developer Kit=11.6-cert15
Digium Asterisk Appliance Developer Kit=11.6-cert15
Digium Asterisk Appliance Developer Kit=11.6-cert16
Digium Asterisk Appliance Developer Kit=11.6-cert17
Digium Asterisk Appliance Developer Kit=11.6-cert18
Digium Asterisk Appliance Developer Kit=11.6-cert2
Digium Asterisk Appliance Developer Kit=11.6-cert2
Digium Asterisk Appliance Developer Kit=11.6-cert3
Digium Asterisk Appliance Developer Kit=11.6-cert3
Digium Asterisk Appliance Developer Kit=11.6-cert4
Digium Asterisk Appliance Developer Kit=11.6-cert4
Digium Asterisk Appliance Developer Kit=11.6-cert5
Digium Asterisk Appliance Developer Kit=11.6-cert5
Digium Asterisk Appliance Developer Kit=11.6-cert6
Digium Asterisk Appliance Developer Kit=11.6-cert6
Digium Asterisk Appliance Developer Kit=11.6-cert7
Digium Asterisk Appliance Developer Kit=11.6-cert7
Digium Asterisk Appliance Developer Kit=11.6-cert8
Digium Asterisk Appliance Developer Kit=11.6-cert8
Digium Asterisk Appliance Developer Kit=11.6-cert9
Digium Asterisk Appliance Developer Kit=11.6.0
Digium Asterisk Appliance Developer Kit=11.6.0
Digium Asterisk Appliance Developer Kit=11.6.0-rc1
Digium Asterisk Appliance Developer Kit=11.6.0-rc2
Digium Asterisk Appliance Developer Kit=13.1-cert1
Digium Asterisk Appliance Developer Kit=13.1-cert1-rc1
Digium Asterisk Appliance Developer Kit=13.1-cert1-rc3
Digium Asterisk Appliance Developer Kit=13.1-cert2
Digium Asterisk Appliance Developer Kit=13.1-cert3
Digium Asterisk Appliance Developer Kit=13.1-cert3-rc1
Digium Asterisk Appliance Developer Kit=13.1-cert4
Digium Asterisk Appliance Developer Kit=13.1-cert5
Digium Asterisk Appliance Developer Kit=13.1-cert6
Digium Asterisk Appliance Developer Kit=13.1-cert7
Digium Asterisk Appliance Developer Kit=13.1-cert8
Digium Asterisk Appliance Developer Kit=13.1.0
Digium Asterisk Appliance Developer Kit=13.1.0-rc1
Digium Asterisk Appliance Developer Kit=13.1.0-rc2
Digium Asterisk Appliance Developer Kit=13.8-cert1
Digium Asterisk Appliance Developer Kit=13.8-cert1-rc2
Digium Asterisk Appliance Developer Kit=13.8-cert1-rc3
Digium Asterisk Appliance Developer Kit=13.8-cert1_rc1
Digium Asterisk Appliance Developer Kit=13.8-cert1_rc2
Digium Asterisk Appliance Developer Kit=13.8-cert1_rc3
Digium Asterisk Appliance Developer Kit=13.8-cert2
Digium Asterisk Appliance Developer Kit=13.8-cert2-rc1
Digium Asterisk Appliance Developer Kit=13.8-cert2_rc1
Digium Asterisk Appliance Developer Kit=13.8-cert3
Digium Asterisk Appliance Developer Kit=13.8-cert4
Digium Asterisk Appliance Developer Kit=13.8.0
Digium Asterisk Appliance Developer Kit=13.8.0-rc1
Digium Asterisk Appliance Developer Kit=13.13-cert1-rc1
Digium Asterisk Appliance Developer Kit=13.13-cert1-rc2
Digium Asterisk Appliance Developer Kit=13.13-cert1-rc3
Digium Asterisk Appliance Developer Kit=13.13-cert1-rc4
Digium Asterisk Appliance Developer Kit=13.13-cert2
Digium Asterisk Appliance Developer Kit=13.13-cert3
Digium Asterisk Appliance Developer Kit=13.13-cert4
Digium Asterisk Appliance Developer Kit=13.13-cert5
Digium Asterisk Appliance Developer Kit=13.13-cert6
Digium Asterisk Appliance Developer Kit=13.13-cert7
Digium Asterisk Appliance Developer Kit=13.13-cert8
Digium Asterisk Appliance Developer Kit=13.13-cert9
Digium Asterisk Appliance Developer Kit=13.13-cert2
Digium Asterisk Appliance Developer Kit=13.18-cert1
Digium Asterisk Appliance Developer Kit=13.18-cert1-rc1
Digium Asterisk Appliance Developer Kit=13.18-cert1-rc2
Digium Asterisk Appliance Developer Kit=13.18-cert1-rc3
Digium Asterisk Appliance Developer Kit=13.18-cert2
Digium Asterisk Appliance Developer Kit=13.18-cert3
Digium Asterisk Appliance Developer Kit=13.18-cert4
Digium Asterisk Appliance Developer Kit=13.21-cert1
Digium Asterisk Appliance Developer Kit=13.21-cert1-rc1
Digium Asterisk Appliance Developer Kit=13.21-cert1-rc2
Digium Asterisk Appliance Developer Kit=13.21-cert2
Digium Asterisk Appliance Developer Kit=13.21-cert3
Asterisk>=13.0.0<13.27.1
Asterisk>=15.0.0<15.7.3
Asterisk>=16.0.0<16.4.1
Debian=8.0
Debian=9.0

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-13161?

    CVE-2019-13161 has been assigned a high severity level due to its potential to crash Asterisk servers.

  • How do I fix CVE-2019-13161?

    To fix CVE-2019-13161, upgrade Asterisk to version 13.27.1, 14.x, 15.7.3, or 16.4.1 and later.

  • Which Asterisk versions are affected by CVE-2019-13161?

    CVE-2019-13161 affects Asterisk versions up to 13.27.0, 14.x through 15.7.2, and 16.x through 16.4.0.

  • What type of vulnerability is CVE-2019-13161?

    CVE-2019-13161 is a pointer dereference vulnerability that occurs during SDP negotiation.

  • Can CVE-2019-13161 be exploited remotely?

    Yes, CVE-2019-13161 can be exploited remotely by sending crafted SDP messages to an affected Asterisk server.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203