Vulnerability Details : CVE-2021-32642
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.
Vulnerability category: Input validationDenial of serviceInformation leak
Products affected by CVE-2021-32642
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:uninett:radsecproxy:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-32642
1.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-32642
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.4
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H |
3.9
|
5.5
|
NIST | |
|
7.0
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H |
2.2
|
4.7
|
GitHub, Inc. |
CWE ids for CVE-2021-32642
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: security-advisories@github.com (Secondary)
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-32642
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https://www.usenix.org/conference/usenixsecurity21/presentation/jeitner
Injection Attacks Reloaded: Tunnelling Malicious Payloads over DNS | USENIXThird Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W7QK5M2SZVMCAFSRQMM6PRZZRQQ372XI/
[SECURITY] Fedora 34 Update: radsecproxy-1.9.0-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://github.com/radsecproxy/radsecproxy/security/advisories/GHSA-56gw-9rj9-55rc
Missing input validation in dynamic discovery example scripts. · Advisory · radsecproxy/radsecproxy · GitHubThird Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HOC5AFG65NYLMMUTNSBOPC5F4LBAC7BR/
[SECURITY] Fedora 33 Update: radsecproxy-1.9.0-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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