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Vulnerability record · CVE-2001-1377 · published 4 March 2002

CVE-2001-1377: Freeradius vulnerability

Freeradius · Freeradius

Multiple RADIUS implementations do not properly validate the Vendor-Length of the Vendor-Specific attribute, which allows remote attackers to cause a denial of service (crash) via a Vendor-Length that is less than 2.

5.0 CVSS 2.0 Medium EPSS 5.4% · top 7.6%
5.0CVSS 2.0 base score
5.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

Multiple RADIUS implementations do not properly validate the Vendor-Length of the Vendor-Specific attribute, which allows remote attackers to cause a denial of service (crash) via a Vendor-Length that is less than 2.

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

Affected products

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

References

LinkTags
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SN-02:02.asc
http://archives.neohapsis.com/archives/linux/suse/2002-q2/0362.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000466
http://marc.info/?l=bugtraq&m=101537153021792&w=2
http://www.cert.org/advisories/CA-2002-06.html PatchThird Party AdvisoryUS Government Resource
http://www.iss.net/security_center/static/8354.php PatchVendor Advisory
http://www.kb.cert.org/vuls/id/936683 PatchThird Party AdvisoryUS Government Resource
http://www.redhat.com/support/errata/RHSA-2002-030.html
http://www.securityfocus.com/bid/4230 PatchVendor Advisory
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SN-02:02.asc
http://archives.neohapsis.com/archives/linux/suse/2002-q2/0362.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000466
http://marc.info/?l=bugtraq&m=101537153021792&w=2
http://www.cert.org/advisories/CA-2002-06.html PatchThird Party AdvisoryUS Government Resource
http://www.iss.net/security_center/static/8354.php PatchVendor Advisory
http://www.kb.cert.org/vuls/id/936683 PatchThird Party AdvisoryUS Government Resource
http://www.redhat.com/support/errata/RHSA-2002-030.html
http://www.securityfocus.com/bid/4230 PatchVendor Advisory

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Related vulnerabilities

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

10.0CVE-2006-4181Gnu radius vulnerabilityFormat string vulnerability in the sqllog function in the SQL accounting code for radiusd in GNU Radius 1.2 and 1.3 allows remote attackers to execut…EPSS 5.0%10.0CVE-2001-0534Lucent radius vulnerabilityMultiple buffer overflows in RADIUS daemon radiusd in (1) Merit 3.6b and (2) Lucent 2.1-2 RADIUS allow remote attackers to cause a denial of service …EPSS 6.7%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%

Source: NIST National Vulnerability Database (record CVE-2001-1377), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.