FreeBSD 5.3/5.4 TCP/IP Stack SACK Segment infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD 5.3/5.4. It has been classified as critical. This affects an unknown function of the component TCP/IP Stack. The manipulation as part of SACK Segment leads to infinite loop. This vulnerability is documented as CVE-2006-0433. The attack can be initiated remotely. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in FreeBSD 5.3/5.4 (Operating System) and classified as critical. This issue affects an unknown code block of the component TCP/IP Stack. The manipulation as part of a SACK Segment leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. The summary by CVE is:

Selective Acknowledgement (SACK) in FreeBSD 5.3 and 5.4 does not properly handle an incoming selective acknowledgement when there is insufficient memory, which might allow remote attackers to cause a denial of service (infinite loop).

The weakness was released 02/02/2006 by Scott Wood (Website). The advisory is shared at ftp.FreeBSD.org. The identification of this vulnerability is CVE-2006-0433 since 01/25/2006. 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. MITRE ATT&CK project uses the attack technique T1499 for this issue.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 56240 (Phorum 5.2.x < 5.2.17 'control.php' 'real_name' XSS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses : XSS.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.FreeBSD.org.

The vulnerability is also documented in the databases at X-Force (24453), Tenable (56240), SecurityFocus (BID 16466†), OSVDB (22861†) and Secunia (SA18696†). Entry connected to this vulnerability is available at VDB-58454. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56240
Nessus Name: Phorum 5.2.x < 5.2.17 'control.php' 'real_name' XSS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 56240
OpenVAS Name: FreeBSD Security Advisory (FreeBSD-SA-06:08.sack.asc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ftp.FreeBSD.org

Timelineinfo

01/25/2006 🔍
02/01/2006 +7 days 🔍
02/01/2006 +0 days 🔍
02/01/2006 +0 days 🔍
02/02/2006 +1 days 🔍
02/02/2006 +0 days 🔍
02/02/2006 +0 days 🔍
02/02/2006 +0 days 🔍
02/06/2006 +4 days 🔍
09/04/2008 +941 days 🔍
03/10/2009 +187 days 🔍
03/12/2021 +4385 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: ftp.FreeBSD.org
Researcher: Scott Wood
Status: Confirmed

CVE: CVE-2006-0433 (🔍)
GCVE (CVE): GCVE-0-2006-0433
GCVE (VulDB): GCVE-100-2021
X-Force: 24453 - FreeBSD SACK handling denial of service, Medium Risk
SecurityFocus: 16466 - FreeBSD TCP SACK Remote Denial Of Service Vulnerability
Secunia: 18696 - FreeBSD SACK Handling Denial of Service, Moderately Critical
OSVDB: 22861 - FreeBSD TCP/IP SACK Infinite Loop DoS
SecurityTracker: 1015566 - FreeBSD TCP SACK Processing May Let Remote Users Deny Service
Vulnerability Center: 21232 - FreeBSD 5.3 and 5.4 Selective Acknowledgement (SACK) Remote DoS Vulnerability, Medium
Vupen: ADV-2006-0409

See also: 🔍

Entryinfo

Created: 02/06/2006 10:52
Updated: 03/12/2021 13:13
Changes: 02/06/2006 10:52 (82), 06/08/2017 23:45 (12), 03/12/2021 13:13 (2)
Complete: 🔍
Cache ID: 216:333:103

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