Headline
Ubuntu Security Notice USN-5785-1
Ubuntu Security Notice 5785-1 - It was discovered that FreeRADIUS incorrectly handled multiple EAP-pwd handshakes. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. Shane Guan discovered that FreeRADIUS incorrectly handled memory when checking unknown SIM option sent by EAP-SIM supplicant. An attacker could possibly use this issue to cause a denial of service on the server. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
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Ubuntu Security Notice USN-5785-1
January 04, 2023
freeradius vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
Summary:
Several security issues were fixed in FreeRADIUS.
Software Description:
- freeradius: high-performance and highly configurable RADIUS server
Details:
It was discovered that FreeRADIUS incorrectly handled multiple EAP-pwd
handshakes. An attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-17185)
Shane Guan discovered that FreeRADIUS incorrectly handled memory when
checking unknown SIM option sent by EAP-SIM supplicant. An attacker could
possibly use this issue to cause a denial of service on the server. This
issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04
LTS. (CVE-2022-41860)
It was discovered that FreeRADIUS incorrectly handled memory when
processing certain abinary attributes. An attacker could possibly use this
issue to cause a denial of service on the server. (CVE-2022-41861)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS:
freeradius 3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1
Ubuntu 20.04 LTS:
freeradius 3.0.20+dfsg-3ubuntu0.2
Ubuntu 18.04 LTS:
freeradius 3.0.16+dfsg-1ubuntu3.2
Ubuntu 16.04 ESM:
freeradius 2.2.8+dfsg-0.1ubuntu0.1+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5785-1
CVE-2019-17185, CVE-2022-41860, CVE-2022-41861
Package Information:
https://launchpad.net/ubuntu/+source/freeradius/3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1
https://launchpad.net/ubuntu/+source/freeradius/3.0.20+dfsg-3ubuntu0.2
https://launchpad.net/ubuntu/+source/freeradius/3.0.16+dfsg-1ubuntu3.2
Related news
Red Hat Security Advisory 2023-2870-01 - FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service server, designed to allow centralized authentication and authorization for a network. Issues addressed include an information leakage vulnerability.
An update for the freeradius:3.0 module is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-41859: 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-2022-41860: In freeradius, when an EAP-SIM supplicant sends an unknown SIM option, the server will try to look that option up in the ...
An update for freeradius is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-41859: 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-2022-41860: In freeradius, when an EAP-SIM supplicant sends an unknown SIM option, the server will try to look that option up in the internal dictio...
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.
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.