#VU74471 Improper Authentication in Backup Exec - CVE-2021-27877
Published: April 5, 2023
Vulnerability identifier: #VU74471
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2021-27877
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Backup Exec
Backup Exec
Software vendor:
Veritas Technologies
Veritas Technologies
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to an usage of obsolete however not disabled SHA authentication scheme. A remote non-authenticated attacker can use the SHA authentication scheme to gain unauthorized access to the BE Agent and execute privileged commands on the system.
Remediation
Install updates from vendor's website.