CVE-2021-27877

An issue was discovered in Veritas Backup Exec before 21.2. It supports multiple authentication schemes: SHA authentication is one of these. This authentication scheme is no longer used in current versions of the product, but hadn't yet been disabled. An attacker could remotely exploit this scheme to gain unauthorized access to an Agent and execute privileged commands.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1	Vendor Advisory
https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:*

History

07 Mar 2025, 14:57

Type	Values Removed	Values Added
References	~~(MISC) https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1 - Vendor Advisory~~	() https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1 - Vendor Advisory
References	~~(MISC) http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html - Exploit, Third Party Advisory, VDB Entry~~	() http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html - Exploit, Third Party Advisory, VDB Entry
CWE	~~CWE-287~~	NVD-CWE-noinfo

Information

Published : 2021-03-01 22:15

Updated : 2025-03-07 14:57

NVD link : CVE-2021-27877

Mitre link : CVE-2021-27877

JSON object : View

Products Affected

veritas

backup_exec

CWE

NVD-CWE-noinfo

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