A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- 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-119 and the CVSS impact.
Summary
A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a 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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* | up to 13.19.1; 14.0.0 – 14.7.5; 15.0.0 – 15.2.1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.18:cert1:*:*:*:*:*:* | 13.18 cert1 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:13.18:cert2:*:*:*:*:*:* | 13.18 cert2 | Vulnerable | Digium |
| cpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:* | up to 13.18 | Vulnerable | Digium |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* Versions up to 13.19.1; 14.0.0 – 14.7.5; 15.0.0 – 15.2.1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.18:cert1:*:*:*:*:*:* Versions 13.18 cert1 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:13.18:cert2:*:*:*:*:*:* Versions 13.18 cert2 Vulnerable ·Digium
- cpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:* Versions up to 13.18 Vulnerable ·Digium
- 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-2018-7284
- 2026-10-03 Alias added: GHSA-h9x3-h6rr-35ww
References
Sources
- CVE-2018-7284 · CVE Program
- CVE-2018-7284 · NVD
- FIRST EPSS
- GHSA-h9x3-h6rr-35ww · GitHub Advisory Database · CC BY 4.0
- CVE-2018-7284 · 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