CVE-2020-36167

Published on: 01/05/2021 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:23:31 PM UTC

CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:C/UI:N

Certain versions of Backup Exec from Veritas contain the following vulnerability:

An issue was discovered in the server in Veritas Backup Exec through 16.2, 20.6 before hotfix 298543, and 21.1 before hotfix 657517. On start-up, it loads the OpenSSL library from the Installation folder. This library in turn attempts to load the /usr/local/ssl/openssl.cnf configuration file, which may not exist. On Windows systems, this path could translate to <drive>:\usr\local\ssl\openssl.cnf. A low privileged user can create a :\usr\local\ssl\openssl.cnf configuration file to load a malicious OpenSSL engine, resulting in arbitrary code execution as SYSTEM when the service starts. This gives the attacker administrator access on the system, allowing the attacker (by default) to access all data, access all installed applications, etc. If the system is also an Active Directory domain controller, then this can affect the entire domain.

  • CVE-2020-36167 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 8.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
CHANGED HIGH HIGH HIGH

CVSS2 Score: 7.2 - HIGH

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
COMPLETE COMPLETE COMPLETE

CVE References

Description Tags Link
VU#429301 - Veritas Backup Exec is vulnerable to privilege escalation due to OPENSSLDIR location Third Party Advisory
US Government Resource
www.kb.cert.org
text/html
URL Logo CERT-VN VU#429301
Backup Exec OpenSSL advisory | Veritas™ Vendor Advisory
www.veritas.com
text/html
URL Logo MISC www.veritas.com/content/support/en_US/security/VTS20-010

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationVeritasBackup ExecAllAllAllAll
ApplicationVeritasBackup ExecAllAllAllAll
  • cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:*:
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