Vulnerability Name:

CVE-2021-32642 (CCN-202753)

Assigned:2021-05-28
Published:2021-05-28
Updated:2022-08-19
Summary: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.
CVSS v3 Severity:9.4 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H)
8.2 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-74
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-32642

Source: XF
Type: UNKNOWN
radsecproxy-cve202132642-sec-bypass(202753)

Source: CCN
Type: radsecproxy GIT Repository
Missing input validation in dynamic discovery example scripts.

Source: CONFIRM
Type: Third Party Advisory
https://github.com/radsecproxy/radsecproxy/security/advisories/GHSA-56gw-9rj9-55rc

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-a4be4c93e4

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-d3f8193065

Source: MISC
Type: Third Party Advisory
https://www.usenix.org/conference/usenixsecurity21/presentation/jeitner

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-32642

Vulnerable Configuration:Configuration 1:
  • cpe:/a:uninett:radsecproxy:*:*:*:*:*:*:*:* (Version < 1.9.0)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:uninett:radsecproxy:1.8.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    uninett radsecproxy *
    fedoraproject fedora 33
    fedoraproject fedora 34
    uninett radsecproxy 1.8.2