Cisco IOS up to 15.1xb denial of service

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

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS up to 15.1xb. This impacts an unknown function. Performing a manipulation results in denial of service. This vulnerability is known as CVE-2011-3281. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Cisco IOS up to 15.1xb (Router Operating System). This affects an unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

Unspecified vulnerability in Cisco IOS 15.0 through 15.1, in certain HTTP Layer 7 Application Control and Inspection configurations, allows remote attackers to cause a denial of service (device reload or hang) via a crafted HTTP packet, aka Bug ID CSCto68554.

The weakness was published 10/03/2011 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is uniquely identified as CVE-2011-3281 since 08/29/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

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 43292 (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-33370†). Similar entry is available at VDB-58807. 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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 🔍

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 🔍
10/02/2011 +4 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-2011-3281 (🔍)
GCVE (CVE): GCVE-0-2011-3281
GCVE (VulDB): GCVE-100-58815
SecurityFocus: 49826 - Cisco IOS IPS and Zone-Based Firewall Multiple Denial of Service Vulnerabilities
Vulnerability Center: 33370 - [cisco-sa-20110928-zbfw] Cisco IOS Remote DoS Vulnerability via Crafted HTTP Packets, High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/23/2021 07:47
Changes: 03/23/2015 16:50 (53), 04/07/2017 18:27 (12), 11/23/2021 07:47 (2)
Complete: 🔍
Cache ID: 216::103

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

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