CVE-2021-27878
Veritas Backup Exec Agent Command Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply updates per vendor instructions.
CISA notes
https://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27878
Description
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. The attacker could use one of these commands to execute an arbitrary command on the system using system privileges.
Severity
CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:NAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| - | - | n/a |
References
2 LinksRecord Details
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