VDB-187463 · CVE-2021-42711 · MNDT-2021-0010

Barracuda Network Access Client up to 5.2.1 on Windows temp file

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.
8.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Barracuda Network Access Client up to 5.2.1 on Windows and classified as critical. Affected by this issue is some unknown functionality. The manipulation leads to temp file. This vulnerability is listed as CVE-2021-42711. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Barracuda Network Access Client up to 5.2.1 on Windows. This issue affects an unknown part. The manipulation with an unknown input leads to a temp file vulnerability. Using CWE to declare the problem leads to CWE-377. Creating and using insecure temporary files can leave application and system data vulnerable to attack. Impacted is confidentiality, integrity, and availability.

The weakness was presented 12/02/2021 as MNDT-2021-0010. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-42711 since 10/19/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.2.2 eliminates this vulnerability. The upgrade is hosted for download at campus.barracuda.com. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Barracuda

Name

Network Access Client

Version

License

commercial

Website

Vendor: https://www.barracuda.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Temp file
CWE: CWE-377
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: 🔍

Upgrade: Network Access Client 5.2.2

Timelineinfo

10/19/2021 🔍
11/24/2021 +36 days 🔍
12/02/2021 +8 days 🔍
12/02/2021 +0 days 🔍
12/08/2021 +6 days 🔍

Sourcesinfo

Vendor: barracuda.com

Advisory: MNDT-2021-0010
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-42711 (🔍)
GCVE (CVE): GCVE-0-2021-42711
GCVE (VulDB): GCVE-100-187463

Entryinfo

Created: 12/02/2021 08:20
Updated: 12/08/2021 15:00
Changes: 12/02/2021 08:20 (43), 12/08/2021 14:56 (1), 12/08/2021 15:00 (18)
Complete: 🔍
Cache ID: 216::103