#VU102732 Information disclosure in Rsync - CVE-2024-12086

Vulnerability identifier: #VU102732

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-12086

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rsync
Server applications / Other server solutions

Vendor: Samba

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application when handling checksums. A remote attacker can trick the victim into connecting to an attacker-controlled server and enumerate contents of arbitrary files on the client's machine, basically allowing a rouge server to read contents byte-by-byte of any file on the client's system.

This issue occurs when files are being copied from a client to a server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Rsync: 1.6.4 - 3.3.0pre1

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External links
https://seclists.org/oss-sec/2025/q1/16

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.