High
Security advisory
A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-16671
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:28 UTC · Revision 1
Source evidence
A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.
osv:CVE-2017-16671
Complete source record
{
"id": "6648aa2e4db6fcdf52f88864bc25b00fd31c1e911286f34dfbd9c24f717fc408",
"url": "https://osv.dev/vulnerability/CVE-2017-16671",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-16671",
"summary": "A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.",
"evidence": "osv:CVE-2017-16671",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-16671",
"aliases": [
"CVE-2017-16671"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/asterisk/asterisk",
"type": "GIT",
"events": [
{
"introduced": "85335355efb2d7914a1fe20ed31afcef15fd210c"
},
{
"fixed": "b7607c41e4825490ffea9d09c0b3b8f9d65f87c0"
},
{
"introduced": "c6d6dd133c3db3b202f1f0d457780c9a6d841e0f"
},
{
"fixed": "6a991af4be8be41d15e784c23e587773007f45ee"
},
{
"introduced": "d4cc63728def7ca06ad3f70547de87bc5c9ef7c0"
},
{
"fixed": "3f3172ac93420b172e5fc29c50f29143e05c88f6"
},
{
"introduced": "fdde690e0fa2e58bf45ea2bf83962bb1c261d6e0"
},
{
"last_affected": "fdde690e0fa2e58bf45ea2bf83962bb1c261d6e0"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.18.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "14.0.0"
},
{
"fixed": "14.7.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "15.0.0"
},
{
"fixed": "15.1.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:digium:certified_asterisk:13.13.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.13.0"
},
{
"last_affected": "13.13.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"13.13.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-16671.json"
}
}
],
"modified": "2026-10-24T10:30:40.064724183Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/201811-11",
"https://www.debian.org/security/2017/dsa-4076",
"https://issues.asterisk.org/jira/browse/ASTERISK-27337"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc1:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc2:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc3:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1_rc4:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert4:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert5:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.13.0:cert6:*:*:*:*:*:*"
],
"vendor_product": "digium:certified_asterisk",
"extracted_events": [
{
"range": [
{
"introduced": "13.13.0-cert1"
},
{
"last_affected": "13.13.0-cert1"
},
{
"introduced": "13.13.0-cert1_rc1"
},
{
"last_affected": "13.13.0-cert1_rc1"
},
{
"introduced": "13.13.0-cert1_rc2"
},
{
"last_affected": "13.13.0-cert1_rc2"
},
{
"introduced": "13.13.0-cert1_rc3"
},
{
"last_affected": "13.13.0-cert1_rc3"
},
{
"introduced": "13.13.0-cert1_rc4"
},
{
"last_affected": "13.13.0-cert1_rc4"
},
{
"introduced": "13.13.0-cert2"
},
{
"last_affected": "13.13.0-cert2"
},
{
"introduced": "13.13.0-cert3"
},
{
"last_affected": "13.13.0-cert3"
},
{
"introduced": "13.13.0-cert4"
},
{
"last_affected": "13.13.0-cert4"
},
{
"introduced": "13.13.0-cert5"
},
{
"last_affected": "13.13.0-cert5"
},
{
"introduced": "13.13.0-cert6"
},
{
"last_affected": "13.13.0-cert6"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-16671",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434829,
"published_at": "2017-11-09T00:29:00.473+00:00"
}