An issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-772.
Summary
An issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. A memory leak occurs when an Asterisk pjsip session object is created and that call gets rejected before the session itself is fully established. When this happens the session object never gets destroyed. Eventually Asterisk can run out of memory and crash.
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 · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* | 13.0.0 to before 13.18.1; 14.0.0 to before 14.7.1; 15.0.0 to before 15.1.1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:*:*:*:*:*:*:* | 13.13.0 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1:*:*:*:*:*:* | 13.13.0 cert1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc1:*:*:*:*:*:* | 13.13.0 cert1_rc1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc2:*:*:*:*:*:* | 13.13.0 cert1_rc2 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc3:*:*:*:*:*:* | 13.13.0 cert1_rc3 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc4:*:*:*:*:*:* | 13.13.0 cert1_rc4 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert2:*:*:*:*:*:* | 13.13.0 cert2 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert3:*:*:*:*:*:* | 13.13.0 cert3 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.13.0:cert4:*:*:*:*:*:* | 13.13.0 cert4 | Vulnerable | Digium |
- cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* Versions 13.0.0 to before 13.18.1; 14.0.0 to before 14.7.1; 15.0.0 to before 15.1.1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:*:*:*:*:*:*:* Versions 13.13.0 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1:*:*:*:*:*:* Versions 13.13.0 cert1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc1:*:*:*:*:*:* Versions 13.13.0 cert1_rc1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc2:*:*:*:*:*:* Versions 13.13.0 cert1_rc2 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc3:*:*:*:*:*:* Versions 13.13.0 cert1_rc3 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc4:*:*:*:*:*:* Versions 13.13.0 cert1_rc4 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert2:*:*:*:*:*:* Versions 13.13.0 cert2 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert3:*:*:*:*:*:* Versions 13.13.0 cert3 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.13.0:cert4:*:*:*:*:*:* Versions 13.13.0 cert4 Vulnerable ·Digium
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-16672
- 2026-10-03 Alias added: GHSA-6j42-f94q-5pq7
References
More Digium Asterisk vulnerabilities
- TI-2006-05256 Integer overflow in the get_input function in the Skinny channel driver (chan_skinny.c)… CVSS 2.0HIGH 7.5
- TI-2017-12542 An issue was discovered in chan_skinny.c in Asterisk Open Source 13.18.2 and older… CVSS 3.0HIGH 7.5
- TI-2023-27195 Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation CVSS 3.1HIGH 7.5
- TI-2017-13083 An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and… CVSS 3.0HIGH 7.5
- TI-2019-13459 An issue was discovered in manager.c in Sangoma Asterisk through 13.x, 16.x, 17.x and… CVSS 3.1HIGH 8.8
- TI-2018-05283 A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5… CVSS 3.0HIGH 7.5
Sources
- CVE-2017-16672 · CVE Program
- CVE-2017-16672 · NVD
- FIRST EPSS
- GHSA-6j42-f94q-5pq7 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-16672 · 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