High
Security advisory
chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7551
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:50 UTC · Revision 1
Source evidence
chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).
osv:CVE-2016-7551
Complete source record
{
"id": "20feaedca4bc6d7056b4c09fc07f0af4778bcf25f82dd5441e3fe6ae46d6f306",
"url": "https://osv.dev/vulnerability/CVE-2016-7551",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7551",
"summary": "chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).",
"evidence": "osv:CVE-2016-7551",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-7551",
"aliases": [
"CVE-2016-7551"
],
"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": "affbc6907eb544bc6e049085de91002ca24ff930"
},
{
"last_affected": "acf021cdec4d45f56aeb9bc87c08a00870f8a6a8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.0"
},
{
"last_affected": "11.0.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.0-beta1"
},
{
"last_affected": "11.0.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.0-beta2"
},
{
"last_affected": "11.0.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.0-rc1"
},
{
"last_affected": "11.0.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.0-rc2"
},
{
"last_affected": "11.0.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.1"
},
{
"last_affected": "11.0.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0.2"
},
{
"last_affected": "11.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.1.0"
},
{
"last_affected": "11.1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.1.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.1.0-rc1"
},
{
"last_affected": "11.1.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.1.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "11.1.0-rc3"
},
{
"last_affected": "11.1.0-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.1.1"
},
{
"last_affected": "11.1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.1.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.1.2"
},
{
"last_affected": "11.1.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.2.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.0"
},
{
"last_affected": "11.2.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.2.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.0-rc1"
},
{
"last_affected": "11.2.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.2.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.0-rc2"
},
{
"last_affected": "11.2.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.1"
},
{
"last_affected": "11.2.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.2.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.2"
},
{
"last_affected": "11.2.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.3.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.3.0"
},
{
"last_affected": "11.3.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.4.0"
},
{
"last_affected": "11.4.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.5.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.5.0"
},
{
"last_affected": "11.5.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.5.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.5.1"
},
{
"last_affected": "11.5.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.6.0"
},
{
"last_affected": "11.6.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6.0:*:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6.0"
},
{
"last_affected": "11.6.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "11.6.0-NA"
},
{
"last_affected": "11.6.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.6.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.6.1"
},
{
"last_affected": "11.6.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.6-cert1"
},
{
"last_affected": "11.6-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert1:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert1"
},
{
"last_affected": "11.6-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.7.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.7.0"
},
{
"last_affected": "11.7.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.8.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.8.0"
},
{
"last_affected": "11.8.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.8.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.8.1"
},
{
"last_affected": "11.8.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.9.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.9.0"
},
{
"last_affected": "11.9.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.10.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.10.0"
},
{
"last_affected": "11.10.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.10.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.10.1"
},
{
"last_affected": "11.10.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.10.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.10.2"
},
{
"last_affected": "11.10.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.11.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.11.0"
},
{
"last_affected": "11.11.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.12.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.12.0"
},
{
"last_affected": "11.12.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.12.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.12.1"
},
{
"last_affected": "11.12.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.13.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.13.0"
},
{
"last_affected": "11.13.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.13.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.13.1"
},
{
"last_affected": "11.13.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.14.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.14.0"
},
{
"last_affected": "11.14.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.14.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.14.1"
},
{
"last_affected": "11.14.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.14.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.14.2"
},
{
"last_affected": "11.14.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.15.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.15.0"
},
{
"last_affected": "11.15.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.15.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.15.1"
},
{
"last_affected": "11.15.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.16.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.16.0"
},
{
"last_affected": "11.16.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.17.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.17.0"
},
{
"last_affected": "11.17.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.17.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.17.1"
},
{
"last_affected": "11.17.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.18.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.18.0"
},
{
"last_affected": "11.18.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.19.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.19.0"
},
{
"last_affected": "11.19.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.20.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.20.0"
},
{
"last_affected": "11.20.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.21.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.21.0"
},
{
"last_affected": "11.21.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.21.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.21.1"
},
{
"last_affected": "11.21.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.21.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.21.2"
},
{
"last_affected": "11.21.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.22.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.22.0"
},
{
"last_affected": "11.22.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.22.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.22.0-rc1"
},
{
"last_affected": "11.22.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.23.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.23.0"
},
{
"last_affected": "11.23.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:11.23.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "11.23.0-rc1"
},
{
"last_affected": "11.23.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0"
},
{
"last_affected": "13.0.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0-beta1"
},
{
"last_affected": "13.0.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0-beta2"
},
{
"last_affected": "13.0.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.0:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0-beta3"
},
{
"last_affected": "13.0.0-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.1"
},
{
"last_affected": "13.0.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.2"
},
{
"last_affected": "13.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.1.0"
},
{
"last_affected": "13.1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.1.1"
},
{
"last_affected": "13.1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.2.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.2.0"
},
{
"last_affected": "13.2.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.2.1"
},
{
"last_affected": "13.2.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.3.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.3.0"
},
{
"last_affected": "13.3.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.3.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.3.1"
},
{
"last_affected": "13.3.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.3.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.3.2"
},
{
"last_affected": "13.3.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.4.0"
},
{
"last_affected": "13.4.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.5.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.5.0"
},
{
"last_affected": "13.5.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:13.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.6.0"
},
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7551.json"
}
}
],
"modified": "2026-10-24T10:30:33.350549831Z",
"provider": "osv",
"references": [
"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832",
"https://bugzilla.redhat.com/show_bug.cgi?id=1374733",
"https://issues.asterisk.org/jira/browse/ASTERISK-26272"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
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],
"vendor_product": "debian:debian_linux",
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{
"range": [
{
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},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-7551",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433251,
"published_at": "2017-04-17T16:59:00.277+00:00"
}