Cisco IOS up to 15.2S DHCP resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco IOS up to 15.2S. Affected by this vulnerability is an unknown functionality of the component DHCP Handler. Such manipulation leads to resource management. This vulnerability is listed as CVE-2012-4621. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Cisco IOS up to 15.2S (Router Operating System). It has been rated as critical. Affected by this issue is an unknown code block of the component DHCP Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

The Device Sensor feature in Cisco IOS 15.0 through 15.2 allows remote attackers to cause a denial of service (device reload) via a DHCP packet, aka Bug ID CSCty96049.

The weakness was presented 09/26/2012 as cisco-sa-20120926-dhcpv6 as confirmed advisory (Website). The advisory is available at tools.cisco.com. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2012-4621 since 08/24/2012. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 62372 (Cisco IOS Software DHCP Denial of Service Vulnerability (cisco-sa-20120926-dhcp)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43249 (Cisco IOS Software DHCP Denial of Service Vulnerability).

Upgrading to version 15.2SNG eliminates this vulnerability. The upgrade is hosted for download at tools.cisco.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (62372), SecurityFocus (BID 55699†), OSVDB (85872†), Secunia (SA50773†) and SecurityTracker (ID 1027572†). See VDB-6566 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62372
Nessus Name: Cisco IOS Software DHCP Denial of Service Vulnerability (cisco-sa-20120926-dhcp)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: IOS 15.2SNG

Timelineinfo

08/24/2012 🔍
09/26/2012 +33 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/27/2012 +1 days 🔍
09/27/2012 +0 days 🔍
09/28/2012 +1 days 🔍
09/28/2012 +0 days 🔍
10/04/2012 +6 days 🔍
04/14/2021 +3114 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20120926-dhcpv6
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-4621 (🔍)
GCVE (CVE): GCVE-0-2012-4621
GCVE (VulDB): GCVE-100-6578
SecurityFocus: 55699 - Cisco IOS DHCP CVE-2012-4621 Denial Of Service Vulnerability
Secunia: 50773 - Cisco IOS Device Sensor DHCP Packet Handling Denial of Service Vulnerability, Less Critical
OSVDB: 85872
SecurityTracker: 1027572 - Cisco IOS DHCP Bug Lets Remote Users Deny Service
Vulnerability Center: 36256 - [cisco-sa-20120926-dhcp] Cisco IOS 15.0 Through 15.2 Remote DoS via Crafted DHCP Packet, High

See also: 🔍

Entryinfo

Created: 10/04/2012 11:45
Updated: 04/14/2021 15:21
Changes: 10/04/2012 11:45 (74), 04/17/2017 11:27 (11), 04/14/2021 15:21 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:5E8:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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