Rsync Server Remote File Enumeration via Checksum Exploit
CVE-2024-12086 Published on January 14, 2025
Rsync: rsync server leaks arbitrary client files
A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.
Vulnerability Analysis
CVE-2024-12086 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2024-12086. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public. 40 days later.
Weakness Type
Detection of Error Condition Without Action
The software detects a specific error, but takes no actions to handle the error.
Products Associated with CVE-2024-12086
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.