CVE-2020-36163 Path traversal in n/a
Low-privileged users can execute arbitrary code as SYSTEM by placing malicious libraries in default Windows paths loaded by NetBackup.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-36163?
CVE-2020-36163 is a critical path traversal vulnerability in Veritas Netbackup, published on 6 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Veritas NetBackup and OpsCenter through 8.3.0.1. NetBackup processes using Strawberry Perl attempt to load and execute libraries from paths that do not exist by default on the Windows operating system. By default, on Windows systems, users can create directories under C:\. If a low privileged user on the Windows system creates an affected path with a library that NetBackup attempts to load, they can execute arbitrary code as SYSTEM or Administrator. This gives the attacker administrator access on the system, allowing the attacker (by default) to access all data, access all installed applications, etc. This affects NetBackup master servers, media servers, clients, and OpsCenter servers on the Windows platform. The system is vulnerable during an install or upgrade on all systems and post-install on Master, Media, and OpsCenter servers during normal operations.
Which versions are affected by CVE-2020-36163?
It affects 2 products.
Products include Veritas Netbackup, Veritas Opscenter.
How do I fix CVE-2020-36163?
No fix has been published for CVE-2020-36163 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-36163 being exploited?
There is no known exploitation of CVE-2020-36163 in the wild and no public exploit code.
Other vulnerabilities in Veritas Netbackup
Sources
Also known as GHSA-rhrj-qwv6-j538.