Unauthorized Access Vulnerability in Veritas Backup Exec
CVE-2021-27876

8.1HIGH

Key Information:

Vendor
Veritas
Status
Backup Exec
Vendor
CVE Published:
1 March 2021

Badges

💰 Ransomware👾 Exploit Exists🦅 CISA Reported

Summary

A vulnerability has been identified in Veritas Backup Exec versions prior to 21.2 that compromises secure communication between clients and agents. This flaw arises from weaknesses in the SHA Authentication scheme, allowing an unauthorized attacker to bypass authentication. Once exploited, the attacker can issue data management protocol commands using an authenticated connection. This may enable access to arbitrary files on the system with system-level privileges, presenting significant risks to data security and system integrity.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited and is known by the CISA as enabling ransomware campaigns.

The CISA's recommendation is: Apply updates per vendor instructions.

References

https://www.veritas.com/content/support/en_US/security/VT...
x_refsource_MISC
http://packetstormsecurity.com/files/168506/Veritas-Backu...
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 💰

    Used in Ransomware

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.