freeradius: DoS via certain DHCP requests
Published Oct 7, 2010
4.3
MEDIUMCVSS 2.0
EPSS 1.62%
Description
The fr_dhcp_decode function in lib/dhcp.c in FreeRADIUS 2.1.9, in certain non-default builds, does not properly handle the DHCP Relay Agent Information option, which allows remote attackers to cause a denial of service (infinite loop and daemon outage) via a packet that has more than one sub-option. NOTE: some of these details are obtained from third party information.
Affected products
No data.
- 2.1.9
No data.
Red Hat Enterprise Linux 4
freeradius
Not affected
Red Hat Enterprise Linux 5
freeradius
Not affected
Red Hat Enterprise Linux 6
freeradius
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | freeradius | Not affected | n/a |
| Red Hat Enterprise Linux 5 | freeradius | Not affected | n/a |
| Red Hat Enterprise Linux 6 | freeradius | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of freeradius as shipped with Red Hat Enterprise Linux 4, 5, or 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.62% (0.01616) | 75.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.62% (0.01616) | 72.79th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.78% (0.00780) | 71.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.46% (0.02458) | 75.35th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.78% (0.00780) | 72.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.52% (0.02517) | 90.54th | v3 (v2023.03.01) |
| Nov 8, 2023 | 2.52% (0.02517) | 88.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.18% (0.01177) | 82.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (10)
- http://freeradius.org/press/index.html#2.1.10 x_refsource_CONFIRM
- http://github.com/alandekok/freeradius-server/commit/4dc7800b866f889a1247685bbaa6dd4238a56279 x_refsource_CONFIRMPatch
- http://secunia.com/advisories/41621 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.openwall.com/lists/oss-security/2010/10/01/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/10/01/8 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2010-3696 Vendor Advisory
- https://bugs.freeradius.org/bugzilla/show_bug.cgi?id=77 x_refsource_CONFIRMPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=639390 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-3696
- https://www.cve.org/CVERecord?id=CVE-2010-3696
| Link | Providers | Tags |
|---|---|---|
| http://freeradius.org/press/index.html#2.1.10 | x_refsource_CONFIRM | |
| http://github.com/alandekok/freeradius-server/commit/4dc7800b866f889a1247685bbaa6dd4238a56279 | x_refsource_CONFIRMPatch | |
| http://secunia.com/advisories/41621 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2010/10/01/3 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2010/10/01/8 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2010-3696 | Vendor Advisory | |
| https://bugs.freeradius.org/bugzilla/show_bug.cgi?id=77 | x_refsource_CONFIRMPatch | |
| https://bugzilla.redhat.com/show_bug.cgi?id=639390 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2010-3696 | ||
| https://www.cve.org/CVERecord?id=CVE-2010-3696 |
Change history (0)
No recorded changes yet.