CVE & CISA-KEV Catalog

CVE-2019-17185

HIGHEPSS 80th pctl
7.5
CVSS v3
NVD

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.

How to fix

Remediation Available
freeradiusDebian
Fixed in:3.0.20+dfsg-1CVE-2019-17185
Fixed in:3.0.20+dfsg-1CVE-2019-17185
Fixed in:3.0.20+dfsg-1CVE-2019-17185
Fixed in:3.0.20+dfsg-1CVE-2019-17185
freeradiusUbuntu
Fixed in:2.2.8+dfsg-0.1ubuntu0.1+esm1USN-5785-1
Fixed in:3.0.16+dfsg-1ubuntu3.2USN-5785-1
Fixed in:3.0.20+dfsg-3ubuntu0.2USN-5785-1
Fixed in:3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1USN-5785-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.17%probability of exploitation in 30 days
80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory2
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.