It was discovered freeradius up to and including version 3.0.19 does not correctly configure logrotate, allowing a local attacker who already has control of the radiusd user to escalate his privileges to root, by tricking logrotate into writing a radiusd-writable file to a directory normally inaccessible by the radiusd user. NOTE: the upstream software maintainer has stated there is simply no way for anyone to gain privileges through this alleged issue.
Weakness
The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Freeradius | Freeradius | * | 3.0.19 (including) |
| Red Hat Enterprise Linux 7 | RedHat | freeradius-0:3.0.13-15.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | freeradius:3.0-8010020190614154208.16b3ab4d | * |
| Freeradius | Ubuntu | bionic | * |
| Freeradius | Ubuntu | cosmic | * |
| Freeradius | Ubuntu | disco | * |
| Freeradius | Ubuntu | eoan | * |
| Freeradius | Ubuntu | focal | * |
| Freeradius | Ubuntu | groovy | * |
| Freeradius | Ubuntu | hirsute | * |
| Freeradius | Ubuntu | impish | * |
| Freeradius | Ubuntu | kinetic | * |
| Freeradius | Ubuntu | lunar | * |
| Freeradius | Ubuntu | mantic | * |
| Freeradius | Ubuntu | oracular | * |
| Freeradius | Ubuntu | plucky | * |
| Freeradius | Ubuntu | trusty | * |
| Freeradius | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/104.html
- https://cwe.mitre.org/data/definitions/470.html
- https://cwe.mitre.org/data/definitions/69.html
References
- http://packetstormsecurity.com/files/155361/FreeRadius-3.0.19-Logrotate-Privilege-Escalation.html
- http://seclists.org/fulldisclosure/2019/Nov/14
- https://access.redhat.com/errata/RHSA-2019:3353
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10143
- https://freeradius.org/security/
- https://github.com/FreeRADIUS/freeradius-server/pull/2666
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6VKBZAZKJP5QKXDXRKCM2ZPZND3TFAX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TKODLHHUOVAYENTBP4D3N25ST3Q6LJBP/
- http://packetstormsecurity.com/files/155361/FreeRadius-3.0.19-Logrotate-Privilege-Escalation.html
- http://seclists.org/fulldisclosure/2019/Nov/14
- https://access.redhat.com/errata/RHSA-2019:3353
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10143
- https://freeradius.org/security/
- https://github.com/FreeRADIUS/freeradius-server/pull/2666
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6VKBZAZKJP5QKXDXRKCM2ZPZND3TFAX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TKODLHHUOVAYENTBP4D3N25ST3Q6LJBP/