FreeRADIUS up to 2.2.9 fr_dhcp_decode memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in FreeRADIUS up to 2.2.9. This vulnerability affects the function fr_dhcp_decode. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2017-10981. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in FreeRADIUS up to 2.2.9 (Network Authentication Software). Affected by this issue is the function fr_dhcp_decode. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

An FR-GV-204 issue in FreeRADIUS 2.x before 2.2.10 allows "DHCP - Memory leak in fr_dhcp_decode()" and a denial of service.

The bug was discovered 06/18/2017. The weakness was published 07/17/2017 by Guido Vranken (Website). The advisory is shared for download at freeradius.org. This vulnerability is handled as CVE-2017-10981 since 07/06/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101823 (CentOS 6 : freeradius (CESA-2017:1759)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236394 (Red Hat Update for freeradius (RHSA-2017:1759)).

Upgrading to version 2.2.10 eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101823), SecurityFocus (BID 99898†) and SecurityTracker (ID 1038914†). Similar entries are available at VDB-103697, VDB-103698, VDB-103699 and VDB-103701. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101823
Nessus Name: CentOS 6 : freeradius (CESA-2017:1759)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53676
OpenVAS Name: Debian Security Advisory DSA 3930-1 (freeradius - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FreeRADIUS 2.2.10

Timelineinfo

06/18/2017 🔍
07/06/2017 +18 days 🔍
07/17/2017 +11 days 🔍
07/17/2017 +0 days 🔍
07/18/2017 +1 days 🔍
07/18/2017 +0 days 🔍
07/18/2017 +0 days 🔍
07/19/2017 +1 days 🔍
07/20/2017 +1 days 🔍
12/13/2022 +1972 days 🔍

Sourcesinfo

Advisory: RHSA-2017:1759
Researcher: Guido Vranken
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-10981 (🔍)
GCVE (CVE): GCVE-0-2017-10981
GCVE (VulDB): GCVE-100-103700

OVAL: 🔍

SecurityFocus: 99898 - FreeRADIUS CVE-2017-10981 Denial of Service Vulnerability
SecurityTracker: 1038914

See also: 🔍

Entryinfo

Created: 07/18/2017 10:57
Updated: 12/13/2022 07:57
Changes: 07/18/2017 10:57 (81), 10/31/2019 06:37 (6), 12/13/2022 07:57 (4)
Complete: 🔍
Cache ID: 216::103

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