CVE-2020-17522: Mid Tier Cache Manipulation Attack Severity: Important
Vendor: The Apache Software Foundation Versions Affected: Traffic Control 3.0.0 to 3.1.0 Traffic Control 4.0.0 to 4.1.0 The unsupported Traffic Control 3.x versions may be also affected Description: When ORT (now via atstccfg) generates ip_allow.config files, 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. Mitigation: 3.x users should upgrade to 4.1.1, 5.0.0, or later versions 4.0.x and 4.1.0 users should upgrade to 4.1.1 or later versions Credit: This issue was discovered by Chris Lemmons of Comcast. References: https://trafficcontrol.apache.org/security/
