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CentOS 7 : freeradius (RHSA-2020:3984)

high Nessus Plugin ID 141587

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Synopsis

The remote CentOS Linux host is missing one or more security updates.

Description

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3984 advisory.

 - It was discovered freeradius up to and including version 3.0.19 does not correctly configure logrotate, allowing a local attacker who already has control of the radiusd user to escalate his privileges to root, by tricking logrotate into writing a radiusd-writable file to a directory normally inaccessible by the radiusd user. NOTE: the upstream software maintainer has stated there is simply no way for anyone to gain privileges through this alleged issue. (CVE-2019-10143)

 - In FreeRADIUS 3.0 through 3.0.19, on average 1 in every 2048 EAP-pwd handshakes fails because the password element cannot be found within 10 iterations of the hunting and pecking loop. This leaks information that an attacker can use to recover the password of any user. This information leakage is similar to the Dragonblood attack and CVE-2019-9494. (CVE-2019-13456)

 - 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. (CVE-2019-17185)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2020:3984

Plugin Details

Severity: High

ID: 141587

File Name: centos_RHSA-2020-3984.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/20/2020

Updated: 10/9/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2019-10143

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:freeradius-python, p-cpe:/a:centos:centos:freeradius-ldap, p-cpe:/a:centos:centos:freeradius-postgresql, p-cpe:/a:centos:centos:freeradius-sqlite, p-cpe:/a:centos:centos:freeradius-doc, p-cpe:/a:centos:centos:freeradius-devel, p-cpe:/a:centos:centos:freeradius, p-cpe:/a:centos:centos:freeradius-mysql, p-cpe:/a:centos:centos:freeradius-utils, p-cpe:/a:centos:centos:freeradius-unixodbc, p-cpe:/a:centos:centos:freeradius-perl, p-cpe:/a:centos:centos:freeradius-krb5

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/20/2020

Vulnerability Publication Date: 5/24/2019

Reference Information

CVE: CVE-2019-10143, CVE-2019-13456, CVE-2019-17185

RHSA: 2020:3984