CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

A vulnerability was found in Cisco IOS XE up to 3.8S.2 (Router Operating System). It has been classified as critical. This affects the function DHCP of the component Function Crafted AAA Packet Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Cisco IOS XE 3.8S(.2) and earlier does not properly use a DHCP pool during assignment of an IP address, which allows remote authenticated users to cause a denial of service (device reload) via an AAA packet that triggers an address requirement, aka Bug ID CSCuh04949.

The weakness was published 11/21/2013 as Cisco IOS XE AAA DHCP Denial of Service Vulnerability as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The public release has been coordinated with Cisco. This vulnerability is uniquely identified as CVE-2013-6692 since 11/07/2013. It is possible to initiate the attack remotely. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 76882 (Cisco IOS XE DHCP AAA Clients DoS (CSCuh04949)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (76882). Further details are available at tools.cisco.com.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

Version

• 3.7S.0
• 3.7S.1
• 3.7S.2
• 3.7S.3
• 3.7S.4
• 3.8S.0
• 3.8S.1
• 3.8S.2

License

• commercial

Support

• end of life (old version)

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 76882
Nessus Name: Cisco IOS XE DHCP AAA Clients DoS (CSCuh04949)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/07/2013 🔍
11/21/2013 +14 days 🔍
11/21/2013 +0 days 🔍
11/21/2013 +0 days 🔍
11/21/2013 +0 days 🔍
11/26/2013 +5 days 🔍
11/26/2013 +0 days 🔍
07/29/2014 +245 days 🔍
06/02/2021 +2500 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: Cisco IOS XE AAA DHCP Denial of Service Vulnerability
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-6692 (🔍)
Vulnerability Center: 42365 - Cisco IOS XE 3.8S(.2) and Prior Remote Denial of Service due to Improper Use of a DHCP Pool When Assigning an IP Address, Medium
SecurityFocus: 63855
Secunia: 55830 - Cisco IOS XE AAA Packet Processing Denial of Service Vulnerability, Not Critical
OSVDB: 100112

scip Labs: https://www.scip.ch/en/?labs.20150108
Misc.: 🔍

Entryinfo

Created: 11/26/2013 15:40
Updated: 06/02/2021 14:09
Changes: 11/26/2013 15:40 (48), 05/15/2017 11:57 (26), 06/02/2021 14:09 (3)
Complete: 🔍

Discussion

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