Cisco IOS 12.2/15.1 Smart Install memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$5k-$25k0.00

A vulnerability was found in Cisco IOS 12.2/15.1 (Router Operating System). It has been declared as critical. Affected by this vulnerability is an unknown function of the component Smart Install. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Unspecified vulnerability in the Smart Install functionality in Cisco IOS 12.2 and 15.1 allows remote attackers to execute arbitrary code or cause a denial of service (device crash) via crafted TCP packets to port 4786, aka Bug ID CSCto10165.

The weakness was disclosed 09/29/2011 by Greg Jones with Digital Assurance (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2011-3271 since 08/29/2011. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 03/19/2021).

We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 56320 (Cisco IOS Software Smart Install Remote Code Execution Vulnerability (cisco-sa-20110928-smart-install)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43212 (Cisco IOS Software Smart Install Remote Code Execution Vulnerability (cisco-sa-20110928-smart-install)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (56320), SecurityFocus (BID 49828†), Secunia (SA46165†) and Vulnerability Center (SBV-33346†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.6

VulDB Base Score: 9.0
VulDB Temp Score: 8.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

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: 56320
Nessus Name: Cisco IOS Software Smart Install Remote Code Execution Vulnerability (cisco-sa-20110928-smart-install)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
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: 🔍

Patch: cisco.com

Timelineinfo

08/29/2011 🔍
09/28/2011 +29 days 🔍
09/28/2011 +0 days 🔍
09/29/2011 +1 days 🔍
09/29/2011 +0 days 🔍
09/29/2011 +0 days 🔍
09/29/2011 +0 days 🔍
09/29/2011 +0 days 🔍
10/03/2011 +4 days 🔍
10/19/2011 +16 days 🔍
03/19/2021 +3439 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Greg Jones
Organization: Digital Assurance
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-3271 (🔍)
GCVE (CVE): GCVE-0-2011-3271
GCVE (VulDB): GCVE-100-4417
SecurityFocus: 49828
Secunia: 46165 - Cisco IOS Smart Install Unspecified Code Execution Vulnerability, Moderately Critical
Vulnerability Center: 33346 - [cisco-sa-20110928-smart-install] Cisco Catalyst and ISR Remote Code Execution Vulnerability, Critical

Entryinfo

Created: 10/19/2011 02:00 AM
Updated: 03/19/2021 03:24 PM
Changes: 10/19/2011 02:00 AM (72), 04/07/2017 06:26 PM (8), 03/19/2021 03:18 PM (3), 03/19/2021 03:24 PM (1)
Complete: 🔍
Cache ID: 18:793:40

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