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.
8.4	$0-$5k	0.00

A vulnerability, which was classified as critical, has been found in OpenBSD 3.0/3.1 (Operating System). Affected by this issue is the function select. The manipulation of the argument size with the input value -1 leads to a integer coercion vulnerability. Using CWE to declare the problem leads to CWE-192. Integer coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.

The weakness was disclosed 08/11/2002 by FIRST with OpenBSD as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is handled as CVE-2002-1420. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (9809).

Productinfo

Type

• Operating System

Name

• OpenBSD

Version

• 3.0
• 3.1

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: 8.4
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.4
VulDB Temp Score: 8.4
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer coercion
CWE: CWE-192 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/11/2002 🔍
08/12/2002 +1 days 🔍
04/11/2003 +242 days 🔍
04/09/2004 +363 days 🔍
08/08/2014 +3773 days 🔍
06/13/2018 +1405 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: FIRST
Organization: OpenBSD
Status: Confirmed

CVE: CVE-2002-1420 (🔍)
X-Force: 9809
SecurityFocus: 5442 - OpenBSD select() Buffer Overflow Vulnerability
OSVDB: 7554 - OpenBSD select() Integer Signedness Arbitrary Kernel Memory Overwrite

Entryinfo

Created: 08/08/2014 12:59
Updated: 06/13/2018 09:31
Changes: 08/08/2014 12:59 (50), 06/13/2018 09:31 (8)
Complete: 🔍

Discussion

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