Cisco IOS 15.1/15.2/15.3/15.4 SSL VPN HTTP input validation

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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS 15.1/15.2/15.3/15.4. It has been declared as problematic. Affected is an unknown function of the component SSL VPN HTTP Handler. Such manipulation leads to input validation. This vulnerability is traded as CVE-2014-2112. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Cisco IOS 15.1/15.2/15.3/15.4 (Router Operating System) and classified as critical. Affected by this issue is some unknown processing of the component SSL VPN HTTP Handler. 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. CVE summarizes:

The SSL VPN (aka WebVPN) feature in Cisco IOS 15.1 through 15.4 allows remote attackers to cause a denial of service (memory consumption) via crafted HTTP requests, aka Bug ID CSCuf51357.

The weakness was shared 03/26/2014 with Cisco as cisco-sa-20140326-ios-sslvpn as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2014-2112 since 02/25/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 73342 (Cisco IOS Software SSL VPN Denial of Service (cisco-sa-20140326-ios-sslvpn)), 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 43375 (Cisco IOS Software SSL VPN Denial of Service Vulnerability (cisco-sa-20140326-ios-sslvpn)).

Applying the patch cisco-sa-20140326-ios-sslvpn is able to eliminate this problem. The bugfix is ready for download at tools.cisco.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92056), Tenable (73342), SecurityFocus (BID 66462†), SecurityTracker (ID 1029962†) and Vulnerability Center (SBV-43762†). The entries VDB-12705, VDB-12703 and VDB-12702 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 73342
Nessus Name: Cisco IOS Software SSL VPN Denial of Service (cisco-sa-20140326-ios-sslvpn)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: cisco-sa-20140326-ios-sslvpn

Timelineinfo

02/25/2014 🔍
03/26/2014 +28 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/27/2014 +1 days 🔍
03/27/2014 +0 days 🔍
03/27/2014 +0 days 🔍
04/04/2014 +8 days 🔍
12/19/2024 +3912 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20140326-ios-sslvpn
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-2112 (🔍)
GCVE (CVE): GCVE-0-2014-2112
GCVE (VulDB): GCVE-100-12704

IAVM: 🔍

X-Force: 92056 - Cisco IOS SSL denial of service, High Risk
SecurityFocus: 66462 - Cisco IOS SSL VPN CVE-2014-2112 Remote Denial of Service Vulnerability
SecurityTracker: 1029962 - Cisco IOS SSL VPN HTTP Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 43762 - [cisco-sa-20140326-ios-sslvpn] Cisco IOS Remote Denial of Service Vulnerability via HTTP Requests - CVE-2014-2112, High

See also: 🔍

Entryinfo

Created: 03/27/2014 12:28
Updated: 12/19/2024 10:58
Changes: 03/27/2014 12:28 (48), 07/09/2015 11:41 (25), 06/16/2021 09:17 (8), 06/16/2021 09:22 (2), 06/16/2021 09:26 (1), 12/19/2024 10:58 (16)
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Cache ID: 216::103

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