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.
5.3	$5k-$25k	0.00

A vulnerability was found in Cisco IOS 15.3S on uBR10000 (Router Operating System) and classified as problematic. Affected by this issue is an unknown code block of the component IPv6-to-IPv4 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:

Memory leak in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on uBR10000 devices allows remote attackers to cause a denial of service (memory consumption) by triggering an error during CPE negotiation, aka Bug ID CSCug00885.

The weakness was released 06/23/2015 with Cisco as CSCug00885 as not defined advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2015-4200 since 06/04/2015. 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 structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/21/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 75254†) and Vulnerability Center (SBV-50666†).

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS

Version

• 15.3S

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: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/04/2015 🔍
06/22/2015 +18 days 🔍
06/22/2015 +0 days 🔍
06/23/2015 +1 days 🔍
06/23/2015 +0 days 🔍
06/23/2015 +0 days 🔍
06/24/2015 +1 days 🔍
05/21/2022 +2523 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCug00885
Organization: Cisco
Status: Not defined

CVE: CVE-2015-4200 (🔍)
SecurityFocus: 75254 - Cisco IOS Software CVE-2015-4200 Denial of Service Vulnerability
SecurityTracker: 1032692
Vulnerability Center: 50666 - Cisco IOS on UBR Devices Remote DoS in IPv6 to IPv4 Subsystem, Medium

Entryinfo

Created: 06/24/2015 09:53 AM
Updated: 05/21/2022 02:36 PM
Changes: 06/24/2015 09:53 AM (59), 07/01/2017 08:04 AM (4), 05/21/2022 02:36 PM (3)
Complete: 🔍
Cache ID: 98:307:40

Discussion

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