Race condition in freeradius
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 5 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-250.
Summary
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."
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| freeradius | freeradius | affects <= 3.0.19 | — | No fix listed | CNA |
- freeradius Vendorfreeradius Affected affects <= 3.0.19 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:* | up to 3.0.19 | Vulnerable | freeradius |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
- cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:* Versions up to 3.0.19 Vulnerable ·freeradius
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2020:3984 Released 2020-09-29 · Red Hat rating Moderatefreeradius security and bug fix update
- Red Hat Enterprise Linux Server (v. 7) freeradius-3.0.13-15.el7
- Red Hat Enterprise Linux Server Optional (v. 7) freeradius-devel-3.0.13-15.el7, freeradius-devel-3.0.13-15.el7.ppc, freeradius-doc-3.0.13-15.el7 +9
- Red Hat Enterprise Linux Workstation (v. 7) freeradius-3.0.13-15.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) freeradius-devel-3.0.13-15.el7, freeradius-doc-3.0.13-15.el7, freeradius-krb5-3.0.13-15.el7 +8
- RHSA-2019:3353 Released 2019-11-05 · Red Hat rating Moderatefreeradius:3.0 security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 8) freeradius-3.0.17-6.module+el8.1.0+3392+9bd8939b.aarch64::freeradius:3.0, freeradius-3.0.17-6.module+el8.1.0+3392+9bd8939b.ppc64le::freeradius:3.0, freeradius-3.0.17-6.module+el8.1.0+3392+9bd8939b.s390x::freeradius:3.0 +46
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2019:3353 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3984 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3984 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3984 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3984 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-10143
- 2026-10-03 Alias added: GHSA-5x22-w79m-34gq
References
Exploit 2
More Freeradius vulnerabilities
- TI-2024-03351 RADIUS Protocol under RFC2865 is vulnerable to forgery attacks. CVSS 3.1CRITICAL 9.0
- TI-2019-08409 FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing… CVSS 3.0CRITICAL 9.8
- TI-2017-08061 An FR-GV-202 issue in FreeRADIUS 2.x before 2.2.10 allows "Write overflow in… CVSS 3.0CRITICAL 9.8
- TI-2017-08066 An FR-GV-301 issue in FreeRADIUS 3.x before 3.0.15 allows "Write overflow in… CVSS 3.0CRITICAL 9.8
- TI-2017-06599 The TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x… CVSS 3.0CRITICAL 9.8
- TI-2019-08410 FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2019-10143 · CVE Program
- CVE-2019-10143 · NVD
- FIRST EPSS
- GHSA-5x22-w79m-34gq · GitHub Advisory Database · CC BY 4.0
- CVE-2019-10143 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences