Root privilege escalation via tcpdump post-rotate command
Published Jun 7, 2022 · Updated Aug 4, 2024
Privilege escalation in 3CX Phone System 16.0.0.1570 allows remote authenticated users to gain root access through PhoneSystem Terminal. The phonesystem account can run tcpdump through passwordless sudo, and tcpdump's -z option executes an attacker-chosen post-rotate program as root. A valid terminal login is required; successful exploitation grants full control of the underlying Debian-based server.
Summary
What happened
Privilege escalation in 3CX Phone System 16.0.0.1570 allows remote authenticated users to gain root access through PhoneSystem Terminal. The phonesystem account can run tcpdump through passwordless sudo, and tcpdump's -z option executes an attacker-chosen post-rotate program as root. A valid terminal login is required; successful exploitation grants full control of the underlying Debian-based server.
The record
- CVE
- CVE-2019-9971
- Published
- Jun 7, 2022
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-269, T1548.003
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 7, 2022CVE 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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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
- GoSecure tcpdump post-rotate privilege-escalation proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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