Credential disclosure via hardcoded localhost TCP connection
Published Jan 21, 2020 · Updated Aug 4, 2024
Information disclosure in apt-cacher-ng 3.3 and earlier allows local users to read administrator credentials via a localhost port. The acngtool maintenance client ignores the supplied Unix SocketPath and sends its HTTP request, including Basic AdminAuth data, to localhost TCP port 3142. Exploitation requires AdminAuth to be enabled and the legitimate daemon to be absent while an unprivileged process binds port 3142 before the default cron job runs.
Summary
What happened
Information disclosure in apt-cacher-ng 3.3 and earlier allows local users to read administrator credentials via a localhost port. The acngtool maintenance client ignores the supplied Unix SocketPath and sends its HTTP request, including Basic AdminAuth data, to localhost TCP port 3142. Exploitation requires AdminAuth to be enabled and the legitimate daemon to be absent while an unprivileged process binds port 3142 before the default cron job runs.
The record
- CVE
- CVE-2020-5202
- Published
- Jan 21, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-200, T1557
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 21, 2020CVE 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 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.
Weakness, pattern, technique
Public exploit references
- Netcat localhost port-hijack proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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