Arbitrary file read via insecure Sudo rule
Published Dec 6, 2021 · Updated Aug 4, 2024
Information disclosure in Kaseya Unitrends Backup Appliance before 10.5.5 allows remote authenticated users to read arbitrary files via the appliance. The apache service account can invoke a permitted Sudo rule without adequate restriction, enabling access to files such as /etc/shadow. Exploitation requires a low-privilege authenticated network foothold and exposes local appliance data without changing integrity or availability.
Summary
What happened
Information disclosure in Kaseya Unitrends Backup Appliance before 10.5.5 allows remote authenticated users to read arbitrary files via the appliance. The apache service account can invoke a permitted Sudo rule without adequate restriction, enabling access to files such as /etc/shadow. Exploitation requires a low-privilege authenticated network foothold and exposes local appliance data without changing integrity or availability.
The record
- CVE
- CVE-2021-43043
- Published
- Dec 6, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-668, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 6, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Exploiting Kaseya Unitrends Backup Appliance Part 1proof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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