Cisco NX-OS up to 4.1.x memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$5k-$25k0.00

A vulnerability classified as problematic has been found in Cisco NX-OS up to 4.1.x (Router Operating System). This affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

Cisco NX-OS 5.0 and earlier on MDS 9000 devices allows remote attackers to cause a denial of service (supervisor CPU consumption) via Authentication Header (AH) authentication in a Virtual Router Redundancy Protocol (VRRP) frame, aka Bug ID CSCte27874.

The weakness was disclosed 11/07/2013 as 31663 as confirmed vulnerability alert (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2013-5566 since 08/22/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/24/2024).

The vulnerability scanner Nessus provides a plugin with the ID 78557 (Cisco MDS 9000 VRRP DoS (CSCte27874)), 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 43352 (Cisco MDS Denial of Service Vulnerability (CSCte27874)).

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 X-Force (88568), Tenable (78557), SecurityFocus (BID 63564†), OSVDB (99521†) and Vulnerability Center (SBV-42355†).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78557
Nessus Name: Cisco MDS 9000 VRRP DoS (CSCte27874)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/22/2013 🔍
11/06/2013 +76 days 🔍
11/07/2013 +1 days 🔍
11/07/2013 +0 days 🔍
11/25/2013 +18 days 🔍
10/17/2014 +326 days 🔍
03/24/2015 +158 days 🔍
12/24/2024 +3563 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: 31663
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-5566 (🔍)
X-Force: 88568
SecurityFocus: 63564
OSVDB: 99521
Vulnerability Center: 42355 - Cisco NX-OS on MDS 9000 Devices Remote Denial of Service via VRRP Frame with Authentication Header (AH) Authentication, Medium

Entryinfo

Created: 03/24/2015 03:54 PM
Updated: 12/24/2024 03:27 PM
Changes: 03/24/2015 03:54 PM (60), 05/15/2017 11:52 AM (4), 01/10/2022 10:59 AM (3), 12/24/2024 03:27 PM (16)
Complete: 🔍
Cache ID: 18:4E1:40

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