Permissions, Privileges, and Access Controls - CVE-2019-10143
Published: May 24, 2019 / Updated: August 4, 2020
Vulnerability identifier: #VU33417
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-10143
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor:
Affected software:
Detailed vulnerability description
The vulnerability allows a local authenticated user to execute arbitrary code.
** 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."
How to mitigate CVE-2019-10143
Install update from vendor's website.
Sources
- 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/