Multiple vulnerabilities in Veritas Backup Exec
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-27876 CVE-2021-27877 CVE-2021-27878 |
| CWE-ID | CWE-287 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild. Vulnerability #3 is being exploited in the wild. |
| Vulnerable software Subscribe |
Backup Exec Client/Desktop applications / Multimedia software |
| Vendor | Veritas Technologies |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Improper Authentication
EUVDB-ID: #VU74470
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-27876
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to an error in SHA Authentication scheme. A remote user can use specially crafted input parameters on one of the data management protocol commands to access an arbitrary file on the system using System privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBackup Exec: 16 FP1 (16.0.1142.1327) - 21.1
External linkshttp://www.veritas.com/content/support/en_US/security/VTS21-001#issue2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
2) Improper Authentication
EUVDB-ID: #VU74471
Risk: Critical
CVSSv3.1: 7.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-27877
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsBackup Exec: 16 FP1 (16.0.1142.1327) - 21.1
External linkshttp://www.veritas.com/content/support/en_US/security/VTS21-001
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
3) Improper Authentication
EUVDB-ID: #VU74472
Risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-27878
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to an error in the SHA Authentication scheme. A remote user can use one of the data management protocol commands to execute an arbitrary command on the system using system privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBackup Exec: 16 FP1 (16.0.1142.1327) - 21.1
External linkshttp://www.veritas.com/content/support/en_US/security/VTS21-001
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
