Cisco IOS up to 12.3 IPv6 Routing denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco IOS up to 12.3. Affected is an unknown function of the component IPv6 Routing. This manipulation causes denial of service. This vulnerability is handled as CVE-2007-0479. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS up to 12.3 (Router Operating System). Affected by this vulnerability is an unknown code of the component IPv6 Routing. 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. The summary by CVE is:

Memory leak in the TCP listener in Cisco IOS 9.x, 10.x, 11.x, and 12.x allows remote attackers to cause a denial of service by sending crafted TCP traffic to an IPv4 address on the IOS device.

The bug was discovered 01/24/2007. The weakness was released 01/25/2007 by Arnaud Ebalard (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2007-0479 since 01/24/2007. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 24744 (Cisco IOS TCP Listener Crafted Packets Remote DoS (CSCek37177)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO, running in the context l and relying on port 161. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43133 (Cisco IOS TCP Listener Memory Leak Can Cause Denial of Service (cisco-sa-20070124-crafted-tcp)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (31716), Tenable (24744), SecurityFocus (BID 22208†), OSVDB (32093†) and Secunia (SA23867†). Entries connected to this vulnerability are available at VDB-2880, VDB-2879, VDB-34599 and VDB-34598. 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: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
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: 24744
Nessus Name: Cisco IOS TCP Listener Crafted Packets Remote DoS (CSCek37177)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

01/24/2007 🔍
01/24/2007 +0 days 🔍
01/24/2007 +0 days 🔍
01/24/2007 +0 days 🔍
01/24/2007 +0 days 🔍
01/24/2007 +0 days 🔍
01/25/2007 +1 days 🔍
01/25/2007 +0 days 🔍
01/25/2007 +0 days 🔍
01/25/2007 +0 days 🔍
01/26/2007 +0 days 🔍
03/01/2007 +34 days 🔍
06/14/2025 +6679 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Arnaud Ebalard
Status: Confirmed

CVE: CVE-2007-0479 (🔍)
GCVE (CVE): GCVE-0-2007-0479
GCVE (VulDB): GCVE-100-2881

OVAL: 🔍

X-Force: 31716
SecurityFocus: 22208 - Cisco IOS TCP Listener Denial Of Service Vulnerability
Secunia: 23867 - Cisco IOS Multiple Vulnerabilities, Highly Critical
OSVDB: 32093 - Cisco IOS Listener Crafted TCP Packets DoS
SecurityTracker: 1017551
SecuriTeam: securiteam.com
Vulnerability Center: 14149 - [cisco-sa-20070124-crafted-tcp] Cisco IOS Denial of Service via Crafted TCP Traffic to IPv4 Address, High
Vupen: ADV-2007-0329

See also: 🔍

Entryinfo

Created: 01/26/2007 14:01
Updated: 06/14/2025 01:52
Changes: 01/26/2007 14:01 (84), 07/14/2019 09:29 (8), 06/14/2025 01:52 (18)
Complete: 🔍
Cache ID: 216:4B8:103

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

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