CVE-2018-7284 EXPLOIT
7.5
HIGH · CVSS 3.0 · EPSS 57.7% (pctl 99)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 7.5 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 57.66% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2018-02-22 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| debian | debian linux |
| digium | asterisk |
| digium | certified asterisk |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Asterisk chan_pjsip 15.2.0 - 'SUBSCRIBE' Stack Corruption | 2018-02-27 |
References
- http://downloads.asterisk.org/pub/security/AST-2018-004.html
- http://www.securityfocus.com/bid/103151
- http://www.securitytracker.com/id/1040416
- https://www.debian.org/security/2018/dsa-4320
- https://www.exploit-db.com/exploits/44184/
- http://downloads.asterisk.org/pub/security/AST-2018-004.html
- http://www.securityfocus.com/bid/103151
- http://www.securitytracker.com/id/1040416
- https://www.debian.org/security/2018/dsa-4320
- https://www.exploit-db.com/exploits/44184/
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