Local privilege escalation via writable systemd service file
Published Nov 24, 2021 · Updated Aug 3, 2024
Local privilege escalation in Octopus Tentacle before 6.1.1116 allows local users to gain root access through a systemd unit file. The Linux installer creates /etc/systemd/system/.service with permissions that let unprivileged users alter its root-executed directives. Exploitation requires local unprivileged access to a Linux host and takes effect when systemd executes the attacker-modified service.
Summary
What happened
Local privilege escalation in Octopus Tentacle before 6.1.1116 allows local users to gain root access through a systemd unit file. The Linux installer creates /etc/systemd/system/.service with permissions that let unprivileged users alter its root-executed directives. Exploitation requires local unprivileged access to a Linux host and takes effect when systemd executes the attacker-modified service.
The record
- CVE
- CVE-2021-31822
- Published
- Nov 24, 2021
- Updated
- Aug 3, 2024
- Vendor
- Octopus Deploy
- Product
- Octopus Tentacle
- Classifications
- CWE-276, T1543.002
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 24, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.15.4 <unspecified
- Affected versionversion=unspecified <6.1.1116
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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