An issue was discovered in channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
An issue was discovered in channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* | 13.0.0 to before 13.29.2; 16.0.0 to before 16.6.2; 17.0.0 to before 17.0.1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:*:*:*:*:*:*:* | 13.21.0 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:cert1:*:*:*:*:*:* | 13.21.0 cert1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:cert2:*:*:*:*:*:* | 13.21.0 cert2 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:cert3:*:*:*:*:*:* | 13.21.0 cert3 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:cert4:*:*:*:*:*:* | 13.21.0 cert4 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.21.0:rc1:*:*:*:*:*:* | 13.21.0 rc1 | Vulnerable | Digium |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* Versions 13.0.0 to before 13.29.2; 16.0.0 to before 16.6.2; 17.0.0 to before 17.0.1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:*:*:*:*:*:*:* Versions 13.21.0 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:cert1:*:*:*:*:*:* Versions 13.21.0 cert1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:cert2:*:*:*:*:*:* Versions 13.21.0 cert2 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:cert3:*:*:*:*:*:* Versions 13.21.0 cert3 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:cert4:*:*:*:*:*:* Versions 13.21.0 cert4 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.21.0:rc1:*:*:*:*:*:* Versions 13.21.0 rc1 Vulnerable ·Digium
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18790
- 2026-10-03 Alias added: GHSA-xv3q-rp6x-hwhw
References
Sources
- CVE-2019-18790 · CVE Program
- CVE-2019-18790 · NVD
- FIRST EPSS
- GHSA-xv3q-rp6x-hwhw · GitHub Advisory Database · CC BY 4.0
- CVE-2019-18790 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences