VDB-177161 · CVE-2021-1567 · GCVE-0-2021-1567

Cisco AnyConnect Secure Mobility Client on Windows Interprocess Communication toctou

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Cisco AnyConnect Secure Mobility Client on Windows. It has been classified as problematic. The affected element is an unknown function of the component Interprocess Communication Handler. The manipulation leads to toctou. This vulnerability is documented as CVE-2021-1567. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Cisco AnyConnect Secure Mobility Client on Windows (Network Encryption Software) (unknown version) and classified as critical. This issue affects an unknown code block of the component Interprocess Communication Handler. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability.

The weakness was released 06/17/2021 as cisco-sa-anyconnect-pos-dll-ff8j6dFv. The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2021-1567. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

11/13/2020 🔍
06/17/2021 +215 days 🔍
06/17/2021 +0 days 🔍
06/21/2021 +4 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-anyconnect-pos-dll-ff8j6dFv
Status: Confirmed

CVE: CVE-2021-1567 (🔍)
GCVE (CVE): GCVE-0-2021-1567
GCVE (VulDB): GCVE-100-177161

Entryinfo

Created: 06/17/2021 08:06
Updated: 06/21/2021 08:55
Changes: 06/17/2021 08:06 (39), 06/21/2021 08:53 (5), 06/21/2021 08:55 (1)
Complete: 🔍
Cache ID: 216::103