CVE-2019-10143: Race Condition
First published: Thu May 02 2019(Updated: )
** DISPUTED ** 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."
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeRADIUS | <=3.0.19 | |
| Fedora | =29 | |
| Fedora | =30 | |
| Red Hat Enterprise Linux | =8.0 |
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Reference Links
- 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@lists.fedoraproject.org/message/A6VKBZAZKJP5QKXDXRKCM2ZPZND3TFAX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TKODLHHUOVAYENTBP4D3N25ST3Q6LJBP/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1705343
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1705143
- https://access.redhat.com/security/cve/cve-2019-10143
- https://access.redhat.com/errata/RHSA-2020:3984
- https://bugzilla.redhat.com/show_bug.cgi?id=1705340
- 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/
Frequently Asked Questions
What is the severity of CVE-2019-10143?
CVE-2019-10143 is classified as a medium severity vulnerability due to its potential for local privilege escalation.
How do I fix CVE-2019-10143?
To fix CVE-2019-10143, update FreeRADIUS to version 3.0.20 or later, or reconfigure logrotate settings to avoid privilege escalation.
Who is affected by CVE-2019-10143?
CVE-2019-10143 affects FreeRADIUS versions up to and including 3.0.19, mainly on systems running Fedora 29, Fedora 30, and Red Hat Enterprise Linux 8.0.
What type of vulnerability is CVE-2019-10143?
CVE-2019-10143 is a local privilege escalation vulnerability that can allow an attacker with access to the radiusd user to gain root access.
What are the consequences of CVE-2019-10143 if exploited?
Exploitation of CVE-2019-10143 could allow a local attacker to escalate privileges and gain unauthorized root access to the affected system.
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