CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

A vulnerability was found in ISC Kea 0.9.2/1.0.0-beta. It has been rated as critical. This issue affects an unknown part of the component DHCP Server. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The kea-dhcp4 and kea-dhcp6 servers 0.9.2 and 1.0.0-beta in ISC Kea, when certain debugging settings are used, allow remote attackers to cause a denial of service (daemon crash) via a malformed packet.

The weakness was released 12/22/2015 (Website). The advisory is shared at kb.isc.org. The identification of this vulnerability is CVE-2015-8373 since 11/26/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 87744 (FreeBSD : kea -- unexpected termination while handling a malformed packet (59e7eb28-b309-11e5-af83-80ee73b5dcf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (87744). Entries connected to this vulnerability are available at VDB-155543, VDB-160891, VDB-172843 and VDB-237855.

Productinfo

Vendor

• ISC

Name

• Kea

Version

• 0.9.2
• 1.0.0-beta

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 87744
Nessus Name: FreeBSD : kea -- unexpected termination while handling a malformed packet (59e7eb28-b309-11e5-af83-80ee73b5dcf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kea FEDORA-2015-930
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/26/2015 🔍
12/21/2015 +25 days 🔍
12/21/2015 +0 days 🔍
12/22/2015 +0 days 🔍
12/22/2015 +0 days 🔍
12/25/2015 +3 days 🔍
01/03/2016 +9 days 🔍
01/05/2016 +2 days 🔍
02/01/2016 +27 days 🔍
07/01/2022 +2341 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: FEDORA-2015-930b020175
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8373 (🔍)
Vulnerability Center: 56332 - ISC Kea 0.9.2 and 1.0.0-beta DHCP Servers Remote DoS via Malformed Packet, High
SecurityFocus: 79740 - ISC Kea CVE-2015-8373 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/25/2015 12:26
Updated: 07/01/2022 14:17
Changes: 12/25/2015 12:26 (57), 07/23/2018 07:39 (24), 07/01/2022 14:17 (4)
Complete: 🔍
Cache ID: 3:3B3:103

Discussion

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