FreeBSD up to 5.5 bzero length denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in FreeBSD 5.2/5.2.1/5.3/5.4/5.5. Affected is the function bzero. This manipulation of the argument length causes denial of service. The identification of this vulnerability is CVE-2006-4178. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability has been found in FreeBSD 5.2/5.2.1/5.3/5.4/5.5 (Operating System) and classified as problematic. Affected by this vulnerability is the function bzero. The manipulation of the argument length with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

Integer signedness error in the i386_set_ldt call in FreeBSD 5.5, and possibly earlier versions down to 5.2, allows local users to cause a denial of service (crash) via unspecified arguments that use negative signed integers to cause the bzero function to be called with a large length parameter, a different vulnerability than CVE-2006-4172.

The weakness was shared 09/25/2006 by Adriano Lima (Website). The advisory is shared at idefense.com. This vulnerability is known as CVE-2006-4178 since 08/16/2006. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept.

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 databases at Exploit-DB (28648), SecurityFocus (BID 20158†), Secunia (SA22064†) and SecurityTracker (ID 1016927†). The entry VDB-2565 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/16/2006 🔍
09/23/2006 +38 days 🔍
09/25/2006 +2 days 🔍
09/25/2006 +0 days 🔍
09/26/2006 +0 days 🔍
09/26/2006 +0 days 🔍
03/12/2015 +3089 days 🔍
01/01/2025 +3582 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: idefense.com⛔
Researcher: Adriano Lima
Status: Confirmed

CVE: CVE-2006-4178 (🔍)
GCVE (CVE): GCVE-0-2006-4178
GCVE (VulDB): GCVE-100-32449
SecurityFocus: 20158 - FreeBSD I386_Set_LDT() Multiple Local Denial of Service Vulnerabilities
Secunia: 22064 - FreeBSD "i386_set_ldt()" Integer Overflow / Signedness Vulnerabilities, Not Critical
SecurityTracker: 1016927

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

Entryinfo

Created: 03/12/2015 15:51
Updated: 01/01/2025 00:02
Changes: 03/12/2015 15:51 (57), 08/04/2018 09:57 (8), 01/01/2025 00:02 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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