Cisco IOS up to 15.1xb resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS up to 15.1xb. It has been rated as problematic. Affected by this issue is some unknown functionality. This manipulation causes resource management. This vulnerability is tracked as CVE-2011-3273. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS up to 15.1xb (Router Operating System). Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848.

The weakness was disclosed 10/03/2011 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is known as CVE-2011-3273. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/23/2021).

The vulnerability scanner Nessus provides a plugin with the ID 56321 (Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities - Cisco Systems), 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 43216 (Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities (cisco-sa-20110928-zbfw)).

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 Tenable (56321), SecurityFocus (BID 49826†) and Vulnerability Center (SBV-33368†). The entry VDB-58815 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56321
Nessus Name: Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/29/2011 🔍
09/28/2011 +30 days 🔍
09/28/2011 +0 days 🔍
09/29/2011 +1 days 🔍
10/02/2011 +3 days 🔍
10/03/2011 +1 days 🔍
10/03/2011 +0 days 🔍
03/23/2015 +1267 days 🔍
11/23/2021 +2437 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-3273 (🔍)
GCVE (CVE): GCVE-0-2011-3273
GCVE (VulDB): GCVE-100-58807
SecurityFocus: 49826 - Cisco IOS IPS and Zone-Based Firewall Multiple Denial of Service Vulnerabilities
Vulnerability Center: 33368 - [cisco-sa-20110928-zbfw] Cisco IOS Remote Denial of Service Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/23/2021 06:40
Changes: 03/23/2015 16:50 (56), 04/02/2017 14:11 (10), 11/23/2021 06:25 (3), 11/23/2021 06:40 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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