Cisco IOS 15.1/15.2 ZFW input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS 15.1/15.2. It has been rated as problematic. Affected is an unknown function of the component ZFW. The manipulation leads to input validation. This vulnerability is listed as CVE-2013-5476. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco IOS 15.1/15.2 (Router Operating System). It has been rated as problematic. This issue affects an unknown function of the component ZFW. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.

The weakness was presented 09/25/2013 as cisco-sa-20130925-cce as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The public release was coordinated in cooperation with Cisco. The identification of this vulnerability is CVE-2013-5476 since 08/22/2013. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 70314 (Cisco IOS Software Zone-Based Firewall and Content Filtering Vulnerability (cisco-sa-20130925-cce)), 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 43321 (Cisco IOS Software Zone-Based Firewall and Content Filtering Vulnerability (cisco-sa-20130925-cce)).

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 Tenable (70314), SecurityFocus (BID 62642†), OSVDB (97741†) and Vulnerability Center (SBV-41622†). See VDB-10492, VDB-10491, VDB-10490 and VDB-10489 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 70314
Nessus Name: Cisco IOS Software Zone-Based Firewall and Content Filtering Vulnerability (cisco-sa-20130925-cce)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

08/22/2013 🔍
09/25/2013 +34 days 🔍
09/25/2013 +0 days 🔍
09/26/2013 +1 days 🔍
09/27/2013 +1 days 🔍
09/27/2013 +0 days 🔍
09/29/2013 +2 days 🔍
10/07/2013 +8 days 🔍
12/24/2024 +4096 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20130925-cce
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5476 (🔍)
GCVE (CVE): GCVE-0-2013-5476
GCVE (VulDB): GCVE-100-10493

IAVM: 🔍

SecurityFocus: 62642
OSVDB: 97741
Vulnerability Center: 41622 - [cisco-sa-20130925-cce] Cisco IOS 15.1 - 15.2 with Content Filtering or HTTP ALG Enabled Remote DoS via Crafted IPv4 HTTP - CVE-2013-5476, High

See also: 🔍

Entryinfo

Created: 09/26/2013 19:26
Updated: 12/24/2024 16:49
Changes: 09/26/2013 19:26 (46), 05/12/2017 08:34 (26), 05/26/2021 00:16 (3), 12/24/2024 16:49 (16)
Complete: 🔍
Committer:
Cache ID: 216:258:103

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