High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-7284
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:43 UTC · Revision 1
Source evidence
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.
osv:CVE-2018-7284
Complete source record
{
"id": "6458a7a972e81acae002cc7e3ba274a4a9c72b2ca3f0dfc522d806edb9846dc9",
"url": "https://osv.dev/vulnerability/CVE-2018-7284",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-7284",
"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.",
"evidence": "osv:CVE-2018-7284",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-7284",
"aliases": [
"CVE-2018-7284"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/asterisk/asterisk",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "d53653ed7a4ccb7f1dfaba6ec5543dc76e60fc53"
},
{
"last_affected": "719ac573a6dea452f122da76ba17073dc6ee1164"
},
{
"introduced": "c6d6dd133c3db3b202f1f0d457780c9a6d841e0f"
},
{
"last_affected": "e8a1b96b5115d87b4dae0004f392193a7a48c7a7"
},
{
"introduced": "d4cc63728def7ca06ad3f70547de87bc5c9ef7c0"
},
{
"last_affected": "6a815cb3db06986dba8cda0f9f3d0d65629a1443"
},
{
"introduced": "b7607c41e4825490ffea9d09c0b3b8f9d65f87c0"
},
{
"last_affected": "9f9c03d928110b9636506f6bc7a8f88c5c315a71"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "13.19.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "13.18"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "14.0.0"
},
{
"last_affected": "14.7.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "15.0.0"
},
{
"last_affected": "15.2.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.18:cert1:*:*:*:*:*:*",
"range": [
{
"introduced": "13.18-cert1"
},
{
"last_affected": "13.18-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.18:cert2:*:*:*:*:*:*",
"range": [
{
"introduced": "13.18-cert2"
},
{
"last_affected": "13.18-cert2"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"13.18-cert1",
"13.18-cert2",
"15.2.1",
"13.19.1",
"14.7.5",
"15.2.0",
"13.19.0",
"13.19.0-rc2",
"15.2.0-rc2",
"certified/13.18-cert2",
"15.2.0-rc1",
"14.7.4",
"13.19.0-rc1",
"certified/13.18-cert1",
"14.7.3",
"14.7.2",
"14.7.1",
"13.18.0",
"14.7.0",
"14.7.0-rc2",
"13.18.0-rc2",
"14.7.0-rc1",
"13.18.0-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7284.json"
}
}
],
"modified": "2026-10-24T10:30:57.555932912Z",
"provider": "osv",
"references": [
"https://www.debian.org/security/2018/dsa-4320",
"https://www.exploit-db.com/exploits/44184/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-7284",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438887,
"published_at": "2018-02-22T00:29:01+00:00"
}