PT-2020-9878 · Openssl+9 · Openssl+8

Mathy Vanhoef · Published 2020-01-05 · Updated 2024-06-15 · CVE-2019-17185

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeRADIUS versions 3.0.x through 3.0.19

Description The EAP-pwd module in FreeRADIUS used a global OpenSSL BN CTX instance to handle all handshakes, resulting in multiple threads using the same instance concurrently. This leads to crashes when concurrent EAP-pwd handshakes are initiated, which can be exploited by an adversary as a Denial-of-Service (DoS) attack.

Recommendations For FreeRADIUS versions 3.0.x through 3.0.19, update to version 3.0.20 or later to resolve the issue. As a temporary workaround, consider restricting concurrent EAP-pwd handshakes to minimize the risk of crashes.

Fix

DoS

Weakness Enumeration

CWE-662

Related Identifiers

ALT-PU-2020-1496

CESA-2020_3984

CESA-2020_4799

CVE-2019-17185

MGASA-2020-0007

OESA-2021-1031

OPENSUSE-SU-2020:0553-1

OPENSUSE-SU-2020_0553-1

OPENSUSE-SU-2024:10767-1

RHSA-2020:3984

RHSA-2020:4799

RHSA-2020_3984

RHSA-2020_4799

RLSA-2020:4799

SUSE-SU-2020:1018-1

SUSE-SU-2020:1020-1

SUSE-SU-2020:1023-1

SUSE-SU-2020:2391-1

USN-5785-1

Affected Products

Alt Linux

Centos

Freeradius

Linuxmint

Openssl

Red Hat

Rocky Linux

Suse

Ubuntu

References · 60

• https://osv.dev/vulnerability/SUSE-SU-2020:2391-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-41861 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/USTITI4A3TVUX3SGO7TJCJ4WWFBZFWLZ · Vendor Advisory
• https://osv.dev/vulnerability/USN-5785-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-17185 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-17185 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-3984.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-17185 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2020:1018-1 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2020:4799 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5785-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2021-1031 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17185 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2020:0553-1 · Vendor Advisory
• https://freeradius.org/security · Vendor Advisory