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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OpenBSD 5.5 and classified as problematic. Affected by this issue is the function uvm_map of the component ELF Binary Handler. The manipulation results in denial of service. In addition, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic has been found in OpenBSD 5.5 (Operating System). Affected is the function uvm_map of the component ELF Binary Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The bug was discovered 10/13/2014. The weakness was presented 10/21/2014 by Alejandro Hernández as OpenBSD <= 5.5 Local Kernel Panic as not defined advisory (Website). The advisory is available at ioactive.com. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by nitr0us and been published immediately after the advisory. The exploit is shared for download at ioactive.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (97747), Exploit-DB (35058), SecurityFocus (BID 70719†) and OSVDB (113688†). Further details are available at archives.neohapsis.com. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Name

• OpenBSD

Version

• 5.5

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.4

VulDB Base Score: 6.2
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: nitr0us
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

10/13/2014 🔍
10/14/2014 +1 days 🔍
10/20/2014 +6 days 🔍
10/21/2014 +1 days 🔍
10/21/2014 +0 days 🔍
10/24/2014 +3 days 🔍
10/25/2014 +1 days 🔍
10/27/2014 +2 days 🔍
07/06/2017 +983 days 🔍

Sourcesinfo

Advisory: OpenBSD <= 5.5 Local Kernel Panic
Researcher: Alejandro Hernández
Status: Not defined

GCVE (VulDB): GCVE-100-68058
X-Force: 97747 - OpenBSD ELF denial of service, Medium Risk
SecurityFocus: 70719 - OpenBSD ELF Executable Local Denial of Service Vulnerability
OSVDB: 113688

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 10/27/2014 09:12
Updated: 07/06/2017 08:11
Changes: 10/27/2014 09:12 (59), 07/06/2017 08:11 (4)
Complete: 🔍
Cache ID: 216:3BB:103

Discussion

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