CVE-2021-27876: Veritas Backup Exec Agent File Access Vulnerability
First published: Mon Mar 01 2021(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Veritas Backup Exec | <21.2 | |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-27876?
CVE-2021-27876 is rated as a high severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2021-27876?
To mitigate CVE-2021-27876, it is recommended to upgrade Veritas Backup Exec to version 21.2 or later.
What type of vulnerability is CVE-2021-27876?
CVE-2021-27876 is a vulnerability related to the SHA Authentication scheme used in Veritas Backup Exec.
Which versions of Veritas Backup Exec are affected by CVE-2021-27876?
CVE-2021-27876 affects Veritas Backup Exec versions prior to 21.2.
Can CVE-2021-27876 be exploited remotely?
Yes, CVE-2021-27876 can be exploited remotely if the affected software is exposed to an attacker.
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