Cisco MGX8200 WAN Switch TCP Timestamp denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco MGX8200 WAN Switch. The impacted element is an unknown function of the component TCP Timestamp Handler. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2005-0356. The attack can be launched remotely. Moreover, an exploit is present. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Cisco MGX8200 WAN Switch (affected version unknown). It has been declared as critical. This vulnerability affects an unknown functionality of the component TCP Timestamp Handler. The manipulation 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. CVE summarizes:

Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.

The bug was discovered 05/18/2005. The weakness was disclosed 05/19/2005 by Noritoshi Demizu with US-CERT (Website). The advisory is shared for download at cisco.com. This vulnerability was named CVE-2005-0356 since 02/11/2005. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

A public exploit has been developed by Daniel Hartmeier and been published 2 days after the advisory. It is possible to download the exploit at exploit-db.com. 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 78204 (F5 Networks BIG-IP : Inadequate validation for TCP segments (SOL4743)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90249 (Microsoft Windows TCP Reset Through Arbitrary Timer Value).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. A possible mitigation has been published 3 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (20635), Exploit-DB (1008), Tenable (78204), SecurityFocus (BID 13676†) and OSVDB (16685†). The entries VDB-1489, VDB-1490, VDB-1491 and VDB-1535 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: 🔍
Access: Public
Status: Proof-of-Concept
Author: Daniel Hartmeier
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78204
Nessus Name: F5 Networks BIG-IP : Inadequate validation for TCP segments (SOL4743)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53976
OpenVAS Name: FreeBSD Security Advisory (FreeBSD-SA-05:15.tcp.asc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: cisco.com

Timelineinfo

02/11/2005 🔍
05/18/2005 +96 days 🔍
05/18/2005 +0 days 🔍
05/19/2005 +1 days 🔍
05/19/2005 +0 days 🔍
05/19/2005 +0 days 🔍
05/21/2005 +1 days 🔍
05/21/2005 +0 days 🔍
05/30/2005 +9 days 🔍
05/31/2005 +1 days 🔍
05/16/2007 +715 days 🔍
10/10/2014 +2704 days 🔍
07/05/2025 +3921 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Noritoshi Demizu
Organization: US-CERT
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2005-0356 (🔍)
GCVE (CVE): GCVE-0-2005-0356
GCVE (VulDB): GCVE-100-1492
CERT: 🔍
X-Force: 20635
SecurityFocus: 13676 - Multiple Vendor TCP Timestamp PAWS Remote Denial Of Service Vulnerability
Secunia: 15393 - Cisco Various Products TCP Timestamp Denial of Service, Less Critical
OSVDB: 16685 - Multiple Vendor Malformed TCP Timestamp DoS
Vulnerability Center: 8039

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

Entryinfo

Created: 05/30/2005 14:51
Updated: 07/05/2025 15:42
Changes: 05/30/2005 14:51 (87), 07/03/2019 09:20 (8), 06/13/2024 08:03 (16), 01/23/2025 17:09 (3), 07/05/2025 15:42 (2)
Complete: 🔍
Cache ID: 216:C49:103

Once again VulDB remains the best source for vulnerability data.

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