VDB-159997 · CVE-2020-3434 · GCVE-0-2020-3434

Cisco AnyConnect Secure Mobility Client on Windows IPC input validation

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4.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Cisco AnyConnect Secure Mobility Client on Windows. It has been classified as problematic. This affects an unknown part of the component IPC Handler. This manipulation causes input validation. This vulnerability is tracked as CVE-2020-3434. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Cisco AnyConnect Secure Mobility Client on Windows (Network Encryption Software) (unknown version) and classified as problematic. Affected by this vulnerability is an unknown code block of the component IPC Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.

The weakness was disclosed 08/17/2020 as cisco-sa-anyconnect-dos-feXq4t as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2020-3434 since 12/12/2019. An attack has to be approached locally. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

The entries VDB-159998 and VDB-159996 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Network Encryption Software

Vendor

Cisco

Name

AnyConnect Secure Mobility Client

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/12/2019 🔍
08/17/2020 +249 days 🔍
08/18/2020 +1 days 🔍
11/10/2020 +84 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-anyconnect-dos-feXq4t
Status: Confirmed

CVE: CVE-2020-3434 (🔍)
GCVE (CVE): GCVE-0-2020-3434
GCVE (VulDB): GCVE-100-159997
See also: 🔍

Entryinfo

Created: 08/18/2020 07:11
Updated: 11/10/2020 10:02
Changes: 08/18/2020 07:11 (41), 08/18/2020 07:16 (12), 11/10/2020 10:02 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.