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.
References
| Link | Resource |
|---|---|
| https://www.kb.cert.org/vuls/id/429301 | Third Party Advisory US Government Resource |
| https://www.veritas.com/content/support/en_US/security/VTS20-010 | Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
14 Jan 2021, 16:59
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-434 | |
| CPE | cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : 7.2
v3 : 8.8 |
| References | (MISC) https://www.veritas.com/content/support/en_US/security/VTS20-010 - Vendor Advisory | |
| References | (CERT-VN) https://www.kb.cert.org/vuls/id/429301 - Third Party Advisory, US Government Resource |
07 Jan 2021, 06:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
06 Jan 2021, 01:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-01-06 01:15
Updated : 2023-12-10 13:41
NVD link : CVE-2020-36167
Mitre link : CVE-2020-36167
CVE.ORG link : CVE-2020-36167
JSON object : View
Products Affected
veritas
- backup_exec
CWE
CWE-434
Unrestricted Upload of File with Dangerous Type