CVE-2020-36167

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 7.2 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.veritas.com/content/support/en_US/security/VTS20-010	Vendor Advisory
https://www.kb.cert.org/vuls/id/429301	Third Party Advisory US Government Resource

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:veritas:backup_exec::::::::
	cpe:2.3:a:veritas:backup_exec::::::::

Information

Published : 2021-01-05 17:15

Updated : 2021-01-14 08:59

NVD link : CVE-2020-36167

Mitre link : CVE-2020-36167

JSON object : View

CWE

CWE-434

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Products Affected

veritas

backup_exec

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