freeradius: crash when processing requests queued for more than 30 seconds
Published Oct 7, 2010
4.3
MEDIUMCVSS 2.0
EPSS 2.21%
Description
The wait_for_child_to_die function in main/event.c in FreeRADIUS 2.1.x before 2.1.10, in certain circumstances involving long-term database outages, does not properly handle long queue times for requests, which allows remote attackers to cause a denial of service (daemon crash) by sending many requests.
Affected products
No data.
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.6
- 2.1.7
- 2.1.8
- 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
Red Hat does not consider this to a security issue. In order for the crash condition to be observed, the RADIUS server must already be unresponsive for extended periods of time, the net result of which is that you cannot DoS an already-unresponsive server. Other specialized conditions are required as well, that make an attack using this flaw unviable.
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 2, 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 2, 2026 | 2.21% (0.02213) | 82.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.21% (0.02213) | 80.24th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.91% (0.00907) | 73.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.85% (0.02846) | 77.02th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.00% (0.00999) | 75.44th | v4 (v2025.03.14) |
| Dec 17, 2024 | 8.80% (0.08804) | 94.55th | v3 (v2023.03.01) |
| May 2, 2024 | 1.23% (0.01233) | 85.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.23% (0.01233) | 83.27th | 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/ff94dd35673bba1476594299d31ce8293b8bd223 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-2010-3697 Vendor Advisory
- https://bugs.freeradius.org/bugzilla/show_bug.cgi?id=35 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=639397 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-3697
- https://www.cve.org/CVERecord?id=CVE-2010-3697
| Link | Providers | Tags |
|---|---|---|
| http://freeradius.org/press/index.html#2.1.10 | x_refsource_CONFIRM | |
| http://github.com/alandekok/freeradius-server/commit/ff94dd35673bba1476594299d31ce8293b8bd223 | 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-2010-3697 | Vendor Advisory | |
| https://bugs.freeradius.org/bugzilla/show_bug.cgi?id=35 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=639397 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2010-3697 | ||
| https://www.cve.org/CVERecord?id=CVE-2010-3697 |
Change history (0)
No recorded changes yet.