Security advisory
An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-12227
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:48 UTC · Revision 1
Source evidence
An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.
osv:CVE-2018-12227
Complete source record
{
"id": "d7d05e00cdc71d3b732bfa04fb5b6575a144523a0edeb4cbb2b62480e282d3a3",
"url": "https://osv.dev/vulnerability/CVE-2018-12227",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-12227",
"summary": "An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.",
"evidence": "osv:CVE-2018-12227",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-12227",
"aliases": [
"CVE-2018-12227"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/asterisk/asterisk",
"type": "GIT",
"events": [
{
"introduced": "85335355efb2d7914a1fe20ed31afcef15fd210c"
},
{
"fixed": "d661052e6d2eddae58bec5a04229c105d11e18f4"
},
{
"introduced": "0"
},
{
"fixed": "fdaecead781e4216a68c672ad0864ca895a47141"
},
{
"introduced": "d4cc63728def7ca06ad3f70547de87bc5c9ef7c0"
},
{
"fixed": "97b17a97812a5b3f30dba94cc7b3b3a2e81473e5"
},
{
"introduced": "b7607c41e4825490ffea9d09c0b3b8f9d65f87c0"
},
{
"last_affected": "d661052e6d2eddae58bec5a04229c105d11e18f4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.21.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "14.7.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "15.0.0"
},
{
"fixed": "15.4.1"
}
],
"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"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.18:cert3:*:*:*:*:*:*",
"range": [
{
"introduced": "13.18-cert3"
},
{
"last_affected": "13.18-cert3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:*:*:*:*",
"range": [
{
"introduced": "13.21-cert1"
},
{
"last_affected": "13.21-cert1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"13.18-cert1",
"13.18-cert2",
"13.18-cert3",
"13.21-cert1",
"15.4.0",
"14.7.6",
"13.21.0-rc1",
"15.4.0-rc1",
"14.7.5",
"14.7.4",
"14.7.3",
"14.7.2",
"14.7.1",
"14.7.0",
"14.7.0-rc2",
"14.7.0-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12227.json"
}
}
],
"modified": "2026-10-24T10:30:58.711177288Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/201811-11",
"https://www.debian.org/security/2018/dsa-4320",
"https://issues.asterisk.org/jira/browse/ASTERISK-27818"
],
"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-2018-12227",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439144,
"published_at": "2018-06-12T04:29:00.22+00:00"
}