An FR-GV-203 issue in FreeRADIUS 2.x before 2.2.10 allows "DHCP - Memory leak in decode_tlv()" and a denial of service.
- Published
- Jul 17, 2017
- Updated
- Jun 16, 2026
- EPSS
- 3.4% · 88th percentile
- CWE
- CWE-772
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| freeradius | freeradius | cpe:2.3:a:freeradius:freeradius |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- freeradius freeradius2.0.0
- freeradius freeradius2.0.1
- freeradius freeradius2.0.2
- freeradius freeradius2.0.3
- freeradius freeradius2.0.4
- freeradius freeradius2.0.5
- freeradius freeradius2.1.0
- freeradius freeradius2.1.1
- freeradius freeradius2.1.10
- freeradius freeradius2.1.11
- freeradius freeradius2.1.12
- freeradius freeradius2.1.2
- freeradius freeradius2.1.3
- freeradius freeradius2.1.4
- freeradius freeradius2.1.6
- freeradius freeradius2.1.7
- freeradius freeradius2.1.8
- freeradius freeradius2.1.9
- freeradius freeradius2.2.0
- freeradius freeradius2.2.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | freeradius | before 3.0.12+dfsg-3 | 3.0.12+dfsg-3 |
| Debian:7 | freeradius | before 2.1.12+dfsg-1.2+deb7u2 | 2.1.12+dfsg-1.2+deb7u2 |
| Red Hat:enterprise_linux:6::server | freeradius | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-debuginfo | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-krb5 | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-ldap | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-mysql | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-perl | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-postgresql | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-python | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-unixODBC | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
| Red Hat:enterprise_linux:6::server | freeradius-utils | before 0:2.2.6-7.el6_9 | 0:2.2.6-7.el6_9 |
Same product
freeradius: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-11234FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-241Plan
- CVE-2017-10984An FR-GV-301 issue in FreeRADIUS 3.x before 3.0.15 allows "Write overflow in data2vp_wimax()" - this allows remote attackers to cause a deni41Plan
- CVE-2017-10979An FR-GV-202 issue in FreeRADIUS 2.x before 2.2.10 allows "Write overflow in rad_coalesce()" - this allows remote attackers to cause a denia41Plan
- CVE-2003-0968Stack-based buffer overflow in SMB_Logon_Server of the rlm_smb experimental module for FreeRADIUS 0.9.3 and earlier allows remote attackers 41Plan
- CVE-2024-3596RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.40Plan
- CVE-2019-11235FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group e40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:freeradius | 3.0.12+dfsg-3 · Debian:12 | Package registry (OSV) |
| red hat:freeradius | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-debuginfo | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-krb5 | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-ldap | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-mysql | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-perl | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-postgresql | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-python | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-unixODBC | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
| red hat:freeradius-utils | 0:2.2.6-7.el6_9 · Red Hat:enterprise_linux:6::server | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-772 · Missing Release of Resource after Effective LifetimeCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- freeradius.org/security/fuzzer-2017.html
- www.debian.org/security/2017/dsa-3930
- www.securityfocus.com/bid/99905
- www.securitytracker.com/id/1038914
- access.redhat.com/errata/RHSA-2017:1759
Vendor advisories and official records. Exploit/PoC links are deliberately left out.