High severity · published Mar 21, 2020
CVE-2019-17185
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes
7.5
CVSS
2.2%
EPSS
No
On KEV
Description
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freeradius · Freeradius
3.0.0 before 3.0.20 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17185
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-17185
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00039.html
Vendor Advisory
https://freeradius.org/security/
Release Notes
https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20
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