CVE-2018-7284
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 66.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 66.17% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 27 February 2018
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- digium/asterisk · digium/certified asterisk · debian/debian linux
- Source
- cve@mitre.org
EPSS moved from 42.2% on 21 September 2026 to 66.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://downloads.asterisk.org/pub/security/AST-2018-004.htmlPatch, Vendor Advisory
- http://www.securityfocus.com/bid/103151Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040416Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4320Third Party Advisory
- https://www.exploit-db.com/exploits/44184/Exploit, Third Party Advisory, VDB Entry
- http://downloads.asterisk.org/pub/security/AST-2018-004.htmlPatch, Vendor Advisory
- http://www.securityfocus.com/bid/103151Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040416Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4320Third Party Advisory
- https://www.exploit-db.com/exploits/44184/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.