CVE-2020-36167
Veritas Backup Exec OpenSSL Engine Loading Arbitrary Code Execution
Description
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.
INFO
Published Date :
Jan. 6, 2021, 1:15 a.m.
Last Modified :
Jan. 14, 2021, 4:59 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
2.5
Public PoC/Exploit Available at Github
CVE-2020-36167 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-36167.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-36167 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-36167 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Changed Reference Type https://www.kb.cert.org/vuls/id/429301 No Types Assigned https://www.kb.cert.org/vuls/id/429301 Third Party Advisory, US Government Resource Changed Reference Type https://www.veritas.com/content/support/en_US/security/VTS20-010 No Types Assigned https://www.veritas.com/content/support/en_US/security/VTS20-010 Vendor Advisory Added CWE NIST CWE-434 Added CPE Configuration OR *cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:* versions from (including) 20.0 up to (excluding) 20.0.1188.2734 *cpe:2.3:a:veritas:backup_exec:*:*:*:*:*:*:*:* versions from (including) 21.0 up to (excluding) 21.0.1200.1217 -
CVE Modified by [email protected]
Jan. 07, 2021
Action Type Old Value New Value Added Reference https://www.kb.cert.org/vuls/id/429301 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-36167 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-36167
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24694
percentile