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Vulnerability record · CVE-2009-3111 · published 9 September 2009

CVE-2009-3111: Freeradius vulnerability

Freeradius · Freeradius

The rad_decode function in FreeRADIUS before 1.1.8 allows remote attackers to cause a denial of service (radiusd crash) via zero-length Tunnel-Password attributes, as demonstrated by a certain module in VulnDisco Pack Professional 7.6 through 8.11. NOTE: this is a regression error related to CVE-2003-0967.

5.0 CVSS 2.0 Medium EPSS 11% · top 4.2%
5.0CVSS 2.0 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

The rad_decode function in FreeRADIUS before 1.1.8 allows remote attackers to cause a denial of service (radiusd crash) via zero-length Tunnel-Password attributes, as demonstrated by a certain module in VulnDisco Pack Professional 7.6 through 8.11. NOTE: this is a regression error related to CVE-2003-0967.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://github.com/alandekok/freeradius-server/commit/860cad9e02ba344edb0038419e415fe05a9a01f4 Patch
http://intevydis.com/vd-list.shtml
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
http://secunia.com/advisories/36509
http://support.apple.com/kb/HT3937
http://www.openwall.com/lists/oss-security/2009/09/09/1 Patch
http://www.redhat.com/support/errata/RHSA-2009-1451.html
http://www.securityfocus.com/bid/36263
http://www.vupen.com/english/advisories/2009/3184
https://lists.freeradius.org/pipermail/freeradius-users/2009-September/msg00242.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9919
http://github.com/alandekok/freeradius-server/commit/860cad9e02ba344edb0038419e415fe05a9a01f4 Patch
http://intevydis.com/vd-list.shtml
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
http://secunia.com/advisories/36509
http://support.apple.com/kb/HT3937
http://www.openwall.com/lists/oss-security/2009/09/09/1 Patch
http://www.redhat.com/support/errata/RHSA-2009-1451.html
http://www.securityfocus.com/bid/36263
http://www.vupen.com/english/advisories/2009/3184
https://lists.freeradius.org/pipermail/freeradius-users/2009-September/msg00242.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9919

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-11234Freeradius improper authentication vulnerabilityFreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2019-9497.EPSS 7.6%9.8CVE-2019-11235Freeradius insufficient verification of data authenticity vulnerabilityFreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group element is…EPSS 3.6%9.8CVE-2017-10979Freeradius out-of-bounds write vulnerabilityAn 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 denial of serv…EPSS 7.0%9.8CVE-2017-10984Freeradius out-of-bounds write vulnerabilityAn 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 denial of ser…EPSS 6.4%9.8CVE-2017-9148Freeradius improper authentication vulnerabilityThe TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x before 2017-02-04, and 4.0.x before 2017-02-04 fails to reliably …EPSS 3.9%9.0CVE-2024-3596Freeradius vulnerabilityRADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject,…EPSS 15%8.1CVE-2015-8763Freeradius out-of-bounds read vulnerabilityThe EAP-PWD module in FreeRADIUS 3.0 through 3.0.8 allows remote attackers to have unspecified impact via a crafted (1) commit or (2) confirm message…EPSS 1.2%8.1CVE-2015-8764Freeradius memory buffer overflow vulnerabilityOff-by-one error in the EAP-PWD module in FreeRADIUS 3.0 through 3.0.8, which triggers a buffer overflow.EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2009-3111), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.