Security advisory
When ORT (now via atstccfg) generates ip_allow.config files in Apache Traffic Control 3.0.0 to 3.1.0 and 4.0.0 to 4.1.0, those files include permissions that allow bad actors to push arbitrary content into and remove arbitrary content from CDN cache servers. Additionally, these permissions are potentially extended to IP addresses outside the desired range, resulting in them being granted to clients possibly outside the CDN arcitechture.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-17522
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:24 UTC · Revision 1
Source evidence
When ORT (now via atstccfg) generates ip_allow.config files in Apache Traffic Control 3.0.0 to 3.1.0 and 4.0.0 to 4.1.0, those files include permissions that allow bad actors to push arbitrary content into and remove arbitrary content from CDN cache servers. Additionally, these permissions are potentially extended to IP addresses outside the desired range, resulting in them being granted to clients possibly outside the CDN arcitechture.
osv:CVE-2020-17522
Complete source record
{
"id": "e8d344780a1d7fc4d306cb201aa859441908ab43d5bc0c634fe4fd6f806ec04f",
"url": "https://osv.dev/vulnerability/CVE-2020-17522",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-17522",
"summary": "When ORT (now via atstccfg) generates ip_allow.config files in Apache Traffic Control 3.0.0 to 3.1.0 and 4.0.0 to 4.1.0, those files include permissions that allow bad actors to push arbitrary content into and remove arbitrary content from CDN cache servers. Additionally, these permissions are potentially extended to IP addresses outside the desired range, resulting in them being granted to clients possibly outside the CDN arcitechture.",
"evidence": "osv:CVE-2020-17522",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-17522",
"aliases": [
"CVE-2020-17522",
"GHSA-pw59-4qgf-jxr8"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/apache/trafficcontrol",
"type": "GIT",
"events": [
{
"introduced": "eca5d609dc5877e9abc075c0228e6e400473f564"
},
{
"last_affected": "f36275fdca278cad1ec461ec7fc41b3d9ce421a8"
},
{
"introduced": "92a14286c60e46da08d08c5dfa3114b31e44311a"
},
{
"last_affected": "1e34ccd8a15c853902a154600efc60466d5736ca"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"last_affected": "3.1.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.1.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"RELEASE-3.1.0",
"RELEASE-3.1.0-RC1",
"RELEASE-3.0.1-RC2",
"RELEASE-3.0.1",
"RELEASE-3.0.1-RC1",
"RELEASE-3.0.0-RC6",
"RELEASE-3.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17522.json"
}
}
],
"modified": "2026-10-24T10:30:52.910502555Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/r3c675031ac220b5eae64a9c84a03ee60045c6045738607dca4a96cb8%40%3Ccommits.trafficcontrol.apache.org%3E",
"https://lists.apache.org/thread.html/rc8bfd7d4f71d61e9193efcd4699eccbab3c202ec1d75ed9d502f08bf%40%3Ccommits.trafficcontrol.apache.org%3E",
"https://lists.apache.org/thread.html/r3de212a3da73bcf98fa2db7eafb75b2eb8e131ff466e6efc4284df09%40%3Cdev.trafficcontrol.apache.org%3E"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-17522",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 437798,
"published_at": "2021-01-26T18:15:40.787+00:00"
}