Cisco IOS up to 12.4xw HTTP Deep Packet Inspection input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS up to 12.4xw. This issue affects some unknown processing of the component HTTP Deep Packet Inspection. The manipulation leads to input validation. This vulnerability is listed as CVE-2008-3812. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Cisco IOS up to 12.4xw (Router Operating System) and classified as critical. This issue affects an unknown functionality of the component HTTP Deep Packet Inspection. 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:

Cisco IOS 12.4, when IOS firewall Application Inspection Control (AIC) with HTTP Deep Packet Inspection is enabled, allows remote attackers to cause a denial of service (device reload) via a malformed HTTP transit packet.

The bug was discovered 09/24/2008. The weakness was presented 09/26/2008 with Cisco (Website). The advisory is shared at cisco.com. The identification of this vulnerability is CVE-2008-3812 since 08/27/2008. 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.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 49018 (Cisco IOS Software Firewall Application Inspection Control Vulnerability), 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 43144 (Cisco IOS Software Firewall Application Inspection Control Vulnerability (cisco-sa-20080924-iosfw)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (45375), Tenable (49018), SecurityFocus (BID 31354†), OSVDB (48734†) and Secunia (SA31990†). See VDB-44214, VDB-44212, VDB-44211 and VDB-44210 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 49018
Nessus Name: Cisco IOS Software Firewall Application Inspection Control Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/27/2008 🔍
09/24/2008 +28 days 🔍
09/24/2008 +0 days 🔍
09/24/2008 +0 days 🔍
09/24/2008 +0 days 🔍
09/24/2008 +0 days 🔍
09/25/2008 +1 days 🔍
09/26/2008 +1 days 🔍
09/26/2008 +0 days 🔍
09/01/2010 +705 days 🔍
03/17/2015 +1658 days 🔍
05/26/2025 +3723 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-3812 (🔍)
GCVE (CVE): GCVE-0-2008-3812
GCVE (VulDB): GCVE-100-44213

OVAL: 🔍

X-Force: 45375
SecurityFocus: 31354 - Cisco IOS AIC HTTP Transit Packet Remote Denial of Service Vulnerability
Secunia: 31990
OSVDB: 48734 - CVE-2008-3812 - Cisco - IOS - Denial-of-Service Issue
SecurityTracker: 1020929
Vulnerability Center: 19570 - [cisco-sa-20080924-iosfw] Cisco IOS AIC Vulnerability Allows Remote DoS via Crafted HTTP Packet, Medium
Vupen: ADV-2008-2670

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/26/2025 07:22
Changes: 03/17/2015 16:11 (68), 08/17/2019 14:49 (13), 05/26/2025 07:22 (18)
Complete: 🔍
Cache ID: 216::103

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