Detections
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Amazon Linux 2 : freeradius (ALAS-2023-1970)
high Nessus Plugin ID 172167
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Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of freeradius installed on the remote host is prior to 3.0.26-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1970 advisory.- In freeradius, the EAP-PWD function compute_password_element() leaks information about the password which allows an attacker to substantially reduce the size of an offline dictionary attack. (CVE-2022-41859)
- In freeradius, when an EAP-SIM supplicant sends an unknown SIM option, the server will try to look that option up in the internal dictionaries. This lookup will fail, but the SIM code will not check for that failure. Instead, it will dereference a NULL pointer, and cause the server to crash. (CVE-2022-41860)
- A flaw was found in freeradius. A malicious RADIUS client or home server can send a malformed abinary attribute which can cause the server to crash. (CVE-2022-41861)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update freeradius' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALAS-2023-1970.html
https://alas.aws.amazon.com/../../faqs.html
https://alas.aws.amazon.com/cve/html/CVE-2022-41859.html
Plugin Details
Severity: High
ID: 172167
File Name: al2_ALAS-2023-1970.nasl
Version: 1.0
Type: local
Agent: unix
Published: 3/7/2023
Updated: 3/7/2023
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2022-41859
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:freeradius-unixodbc, p-cpe:/a:amazon:linux:freeradius-devel, p-cpe:/a:amazon:linux:freeradius-debuginfo, p-cpe:/a:amazon:linux:freeradius-sqlite, p-cpe:/a:amazon:linux:freeradius-krb5, p-cpe:/a:amazon:linux:freeradius-ldap, p-cpe:/a:amazon:linux:freeradius-doc, p-cpe:/a:amazon:linux:freeradius, p-cpe:/a:amazon:linux:freeradius-postgresql, p-cpe:/a:amazon:linux:freeradius-python, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:freeradius-perl, p-cpe:/a:amazon:linux:freeradius-mysql, p-cpe:/a:amazon:linux:freeradius-utils
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/2/2023
Vulnerability Publication Date: 12/7/2022