Sun Solaris 8.0/9.0/10.0 TCP Sequence Number denial of service

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

Summaryinfo

A vulnerability classified as critical was found in Sun Solaris 8.0/9.0/10.0. Affected is an unknown function of the component TCP Sequence Number Handler. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2006-3920. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Sun Solaris 8.0/9.0/10.0 (Operating System) and classified as critical. Affected by this issue is an unknown function of the component TCP Sequence Number Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

The TCP implementation in Sun Solaris 8, 9, and 10 before 20060726 allows remote attackers to cause a denial of service (resource exhaustion) via a TCP packet with an incorrect sequence number, which triggers an ACK storm.

The bug was discovered 07/26/2006. The weakness was presented 07/27/2006 by Rene with Sun Microsystems Inc. (Website). The advisory is shared for download at sunsolve.sun.com. This vulnerability is handled as CVE-2006-3920 since 07/28/2006. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 18075 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115713 (Solaris Hosts are induced by an Internet Transmission Control Protocol (TCP) ACK Storm causing Denial of ServiceVulnerability (1000361.1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at sunsolve.sun.com.

The vulnerability is also documented in the databases at X-Force (28048), Tenable (18075), OSVDB (27541†), Secunia (SA22425†) and SecurityTracker (ID 1016589†). See VDB-31557 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Support

  • end of life (old version)

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 18075
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: sunsolve.sun.com

Timelineinfo

07/26/2006 🔍
07/27/2006 +1 days 🔍
07/27/2006 +0 days 🔍
07/27/2006 +0 days 🔍
07/28/2006 +0 days 🔍
07/28/2006 +0 days 🔍
07/28/2006 +0 days 🔍
07/28/2006 +0 days 🔍
02/17/2008 +569 days 🔍
06/18/2025 +6331 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: sunsolve.sun.com⛔
Researcher: Rene
Organization: Sun Microsystems Inc.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3920 (🔍)
GCVE (CVE): GCVE-0-2006-3920
GCVE (VulDB): GCVE-100-2408

OVAL: 🔍

X-Force: 28048 - Sun Solaris TCP invalid sequence number denial of service, Medium Risk
Secunia: 22425
OSVDB: 27541 - Solaris TCP ACK Saturation DoS
SecurityTracker: 1016589
Vulnerability Center: 17638 - Sun Solaris TCP Implementation Error Allows Remote Attackers to Cause DoS by Causing ACK Storm, Medium
Vupen: ADV-2006-2997

See also: 🔍

Entryinfo

Created: 07/28/2006 12:49
Updated: 06/18/2025 19:37
Changes: 07/28/2006 12:49 (85), 08/05/2019 14:50 (1), 03/13/2021 11:04 (4), 06/18/2025 19:37 (16)
Complete: 🔍
Cache ID: 216:089:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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