CVE-2024-12086 Rsync: rsync server leaks arbitrary client files
A malicious rsync server can reconstruct arbitrary client file contents byte-by-byte during upload operations, leading to sensitive data exposure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-12086?
CVE-2024-12086 is a medium-severity vulnerability in Gentoo Linux, published on 14 Jan 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-390
Which versions are affected by CVE-2024-12086?
It affects 9 products.
Products include Almalinux Almalinux, Archlinux Arch Linux, Gentoo Linux, Nixos Nixos, Redhat Enterprise Linux, Redhat Openshift Container Platform and 3 more.
How do I fix CVE-2024-12086?
Apply the vendor's patch.
Is CVE-2024-12086 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-12086 exists.
Other vulnerabilities in Gentoo Linux
- CVE-2024-12084 Rsync: heap buffer overflow in rsync due to improper checksum length handling
- CVE-2024-6387 Openssh: regresshion - race condition in ssh allows rce/dos
- CVE-2024-12085 Rsync: info leak via uninitialized stack contents
- CVE-2024-12087 Rsync: path traversal vulnerability in rsync
- CVE-2024-12088 Rsync: --safe-links option bypass leads to path traversal
Sources
Also known as ALPINE-CVE-2024-12086, AZL-55661, AZL-55685, BELL-CVE-2024-12086, CLSA-2026-1776873915, DEBIAN-CVE-2024-12086 and 3 more.