CVE-2021-32642
Missing input validation in dynamic discovery example scripts.
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.0
Missing input validation in dynamic discovery example scripts.
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
CVE-2021-32642- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-19467
7.0
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
EUVD-2021-19467- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-03
NVD
7.0
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
CVE-2021-32642- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - CVSS 3.1
- 9.4 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-20, CWE-74
- Updated
- 2026-11-02
OSV
9.4
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
CVE-2021-32642- CVSS 3.1
- 9.4 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-32642
9.4
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
DEBIAN-CVE-2021-32642- CVSS 3.1
- 9.4 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-32642
7.0
radsecproxy is a generic RADIUS proxy that supports both UDP and TLS (RadSec) RADIUS transports. Missing input validation in radsecproxy's naptr-eduroam.sh and radsec-dynsrv.sh scripts can lead to configuration injection via crafted radsec peer discovery DNS records. Users are subject to Information disclosure, Denial of Service, Redirection of Radius connection to a non-authenticated server leading to non-authenticated network access. Updated example scripts are available in the master branch and 1.9 release. Note that the scripts are not part of the installation package and are not updated automatically. If you are using the examples, you have to update them manually. The dyndisc scripts work independently of the radsecproxy code. The updated scripts can be used with any version of radsecproxy.
- Record
UBUNTU-CVE-2021-32642- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - CVSS 3.1
- 9.4 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
radsecproxyDebian:12 |
before 1.8.2-4 | 1.8.2-4 |
radsecproxyDebian:13 |
before 1.8.2-4 | 1.8.2-4 |
radsecproxyDebian:14 |
before 1.8.2-4 | 1.8.2-4 |
radsecproxyUbuntu:16.04:LTS |
All versions, plus listed versions 1.6.5-1build1 |
None known |
radsecproxyUbuntu:18.04:LTS |
All versions, plus listed versions 1.6.9-1 |
None known |
radsecproxyUbuntu:20.04:LTS |
All versions, plus listed versions 1.7.2-11.8.1-1 |
None known |
radsecproxyUbuntu:22.04:LTS |
All versions, plus listed versions 1.8.2-41.9.1-11.9.1-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-32642 is a high vulnerability (CVSS 7.0) in Radsecproxy, published May 28, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.34%, the 71st percentile. Fixed in radsecproxy 1.8.2-4.
References
usenix.org/conference/usenixsecurity21/presentation/jeitner
github.com/radsecproxy/radsecproxy/security/advisories/GHSA-56gw-9rj9-55rc
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOC5AFG65NYLMMUTNSBOPC5F4LBAC7BR
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7QK5M2SZVMCAFSRQMM6PRZZRQQ372XI
security-tracker.debian.org/tracker/CVE-2021-32642
ubuntu.com/security/CVE-2021-32642
github.com/radsecproxy/radsecproxy/commit/ab7a2ea42a75d5ad3421e4365f63cbdcb08fb7af
cve.org/CVERecord?id=CVE-2021-32642