VDB-11264 · CVE-2013-6693 · BID 63860

Cisco IOS 15.3(2)S/15.3(3)S/15.3S MLDP Processing memory corruption

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.
5.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cisco IOS 15.3(2)S/15.3(3)S/15.3S. Affected by this vulnerability is an unknown functionality of the component MLDP Processing. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2013-6693. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS 15.3(2)S/15.3(3)S/15.3S (Router Operating System) and classified as problematic. Affected by this issue is an unknown functionality of the component MLDP Processing. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many multicast flows, aka Bug ID CSCue22345.

The weakness was shared 11/21/2013 as Cisco IOS Software MLDP Denial of Service Vulnerability as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. The vendor cooperated in the coordination of the public release. This vulnerability is handled as CVE-2013-6693 since 11/07/2013. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The vulnerability is due to chunk corruption when MLDP and a large number of VRFs are configured on a device. An attacker could exploit this vulnerability by sending a large number of multicast flows over a number of configured VRF instances. An exploit could allow the attacker to cause a reload of the affected device and lead to a DoS condition.

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

The vulnerability is also documented in the databases at SecurityFocus (BID 63860†), OSVDB (100111†), Secunia (SA55831†) and Vulnerability Center (SBV-42366†). tools.cisco.com is providing further details. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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 🔍
05/15/2017 +1266 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: Cisco IOS Software MLDP Denial of Service Vulnerability
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-6693 (🔍)
GCVE (CVE): GCVE-0-2013-6693
GCVE (VulDB): GCVE-100-11264
SecurityFocus: 63860
Secunia: 55831 - Cisco IOS MLDP Processing Chunk Corruption Denial of Service Vulnerability, Less Critical
OSVDB: 100111
Vulnerability Center: 42366 - Cisco IOS on 7600 Series Routers Remote Denial of Service due to a Flaw in the MLDP Implementation, Medium

Misc.: 🔍

Entryinfo

Created: 11/26/2013 15:34
Updated: 05/15/2017 11:58
Changes: 11/26/2013 15:34 (48), 05/15/2017 11:58 (21)
Complete: 🔍
Committer:
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!