CVE-2021-27876
HIGH
8,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
HIGH
7,5
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: single
Confidentiality: complete
Integrity: partial
Availability: none
Description
AI Translation Available
An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. By using crafted input parameters in one of these commands, an attacker can access an arbitrary file on the system using System privileges.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0197
Percentile
0,8th
Updated
EPSS Score Trend (Last 90 Days)
Application
Backup Exec by Veritas
Version Range Affected
To
21.2
(exclusive)
CPE Identifier
View Detailed Analysis
cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Co…
https://www.veritas.com/content/support/en_US/security/VTS21-001#issue2
http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Co…
https://www.veritas.com/content/support/en_US/security/VTS21-001#issue2