Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Veritas | Backup Exec | < 21.2 |
References
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-CodExploitThird Party AdvisoryVDB Entry
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3Vendor Advisory
- http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-CodExploitThird Party AdvisoryVDB Entry
- https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-US Government Resource
FAQ
What is CVE-2021-27878?
CVE-2021-27878 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 communica...
How severe is CVE-2021-27878?
CVE-2021-27878 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-27878?
Check the references section above for vendor advisories and patch information. Affected products include: Veritas Backup Exec.