VDB-119784 · CVE-2018-0373 · BID 104548

Cisco AnyConnect Secure Mobility Client on Windows vpnva-6.sys input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Cisco AnyConnect Secure Mobility Client on Windows. Impacted is an unknown function in the library vpnva-6.sys. The manipulation results in input validation. This vulnerability is cataloged as CVE-2018-0373. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cisco AnyConnect Secure Mobility Client on Windows (Network Encryption Software) (version unknown). Affected is an unknown function in the library vpnva-6.sys. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

A vulnerability in vpnva-6.sys for 32-bit Windows and vpnva64-6.sys for 64-bit Windows of Cisco AnyConnect Secure Mobility Client for Windows Desktop could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to improper validation of user-supplied data. An attacker could exploit this vulnerability by sending a malicious request to the application. A successful exploit could allow the attacker to cause a DoS condition on the affected system. Cisco Bug IDs: CSCvj47654.

The bug was discovered 06/20/2018. The weakness was shared 06/21/2018 as cisco-sa-20180620-anyconnect-d as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2018-0373 since 11/27/2017. The attack needs to be approached locally. The successful exploitation requires a authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371055 (Cisco AnyConnect Secure Mobility Client for Windows Desktop Denial of Service Vulnerability(cisco-sa-20180620-anyconnect-dos)).

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 vulnerability database at SecurityFocus (BID 104548†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 5.5
NVD Vector: 🔍

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: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/27/2017 🔍
06/20/2018 +205 days 🔍
06/20/2018 +0 days 🔍
06/21/2018 +0 days 🔍
06/21/2018 +0 days 🔍
06/21/2018 +0 days 🔍
03/28/2023 +1741 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180620-anyconnect-d
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0373 (🔍)
GCVE (CVE): GCVE-0-2018-0373
GCVE (VulDB): GCVE-100-119784
SecurityFocus: 104548 - Cisco AnyConnect Secure Mobility Client for Windows CVE-2018-0373 Denial of Service Vulnerability
SecurityTracker: 1041176

Entryinfo

Created: 06/21/2018 18:53
Updated: 03/28/2023 14:20
Changes: 06/21/2018 18:53 (64), 02/21/2020 08:41 (4), 03/28/2023 14:20 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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