High
Security advisory
There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-17281
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:37 UTC · Revision 1
Source evidence
There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.
osv:CVE-2018-17281
Complete source record
{
"id": "c5c4d6dae3c7bfa0dd7a21fd5676ee38d56422a82d5c78b7b75c3fef7d65750f",
"url": "https://osv.dev/vulnerability/CVE-2018-17281",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-17281",
"summary": "There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.",
"evidence": "osv:CVE-2018-17281",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-17281",
"aliases": [
"CVE-2018-17281"
],
"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": "85335355efb2d7914a1fe20ed31afcef15fd210c"
},
{
"last_affected": "8ac08a916c7fcc1ceecf3d682a1877c46deab626"
},
{
"introduced": "c6d6dd133c3db3b202f1f0d457780c9a6d841e0f"
},
{
"last_affected": "fdaecead781e4216a68c672ad0864ca895a47141"
},
{
"introduced": "d4cc63728def7ca06ad3f70547de87bc5c9ef7c0"
},
{
"last_affected": "8b6edb7502ee79f73ce3d8396e8f06ce00f8f042"
},
{
"introduced": "bf004c4584649d080979c4f877a6e9d3e793467c"
},
{
"last_affected": "742007f881f8cb04fe543fba4dbe5404589d9f14"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.0.0"
},
{
"last_affected": "13.23.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "14.0.0"
},
{
"last_affected": "14.7.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:standard:*:*:*",
"range": [
{
"introduced": "15.0.0"
},
{
"last_affected": "15.6.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert12:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert12"
},
{
"last_affected": "11.6-cert12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert13:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert13"
},
{
"last_affected": "11.6-cert13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert14:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert14"
},
{
"last_affected": "11.6-cert14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert15:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert15"
},
{
"last_affected": "11.6-cert15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert16:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert16"
},
{
"last_affected": "11.6-cert16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert17:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert17"
},
{
"last_affected": "11.6-cert17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:11.6:cert18:*:*:lts:*:*:*",
"range": [
{
"introduced": "11.6-cert18"
},
{
"last_affected": "11.6-cert18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert3:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert3"
},
{
"last_affected": "13.1-cert3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert4:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert4"
},
{
"last_affected": "13.1-cert4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert5:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert5"
},
{
"last_affected": "13.1-cert5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert6:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert6"
},
{
"last_affected": "13.1-cert6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert7:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert7"
},
{
"last_affected": "13.1-cert7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.1:cert8:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.1-cert8"
},
{
"last_affected": "13.1-cert8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.8:cert1:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.8-cert1"
},
{
"last_affected": "13.8-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.8:cert2:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.8-cert2"
},
{
"last_affected": "13.8-cert2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.8:cert3:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.8-cert3"
},
{
"last_affected": "13.8-cert3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.8:cert4:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.8-cert4"
},
{
"last_affected": "13.8-cert4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert1:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert1"
},
{
"last_affected": "13.13-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert2:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert2"
},
{
"last_affected": "13.13-cert2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert3:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert3"
},
{
"last_affected": "13.13-cert3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert4:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert4"
},
{
"last_affected": "13.13-cert4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert5:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert5"
},
{
"last_affected": "13.13-cert5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert6:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert6"
},
{
"last_affected": "13.13-cert6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert7:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert7"
},
{
"last_affected": "13.13-cert7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert8:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert8"
},
{
"last_affected": "13.13-cert8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13:cert9:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.13-cert9"
},
{
"last_affected": "13.13-cert9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.21-cert1"
},
{
"last_affected": "13.21-cert1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.21:cert2:*:*:lts:*:*:*",
"range": [
{
"introduced": "13.21-cert2"
},
{
"last_affected": "13.21-cert2"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"11.6-cert12",
"11.6-cert13",
"11.6-cert14",
"11.6-cert15",
"11.6-cert16",
"11.6-cert17",
"11.6-cert18",
"13.1-cert3",
"13.1-cert4",
"13.1-cert5",
"13.1-cert6",
"13.1-cert7",
"13.1-cert8",
"13.13-cert1",
"13.13-cert2",
"13.13-cert3",
"13.13-cert4",
"13.13-cert5",
"13.13-cert6",
"13.13-cert7",
"13.13-cert8",
"13.13-cert9",
"13.21-cert1",
"13.21-cert2",
"13.8-cert1",
"13.8-cert2",
"13.8-cert3",
"13.8-cert4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17281.json"
}
}
],
"modified": "2026-10-24T10:30:20.999722575Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2018/09/msg00034.html",
"https://security.gentoo.org/glsa/201811-11",
"https://www.debian.org/security/2018/dsa-4320",
"https://issues.asterisk.org/jira/browse/ASTERISK-28013",
"https://seclists.org/bugtraq/2018/Sep/53"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-17281",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430400,
"published_at": "2018-09-24T22:29:01.58+00:00"
}