CVE-2024-12084

CRITICAL
Published Jan 15, 2025 Modified Nov 3, 2025 CWE-122 CWE-787

Description

A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.

Is your site exposed to CVE-2024-12084?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122
CWE-787 Out-of-bounds Write

Affected Products

Vendor Product
samba rsync
samba rsync
almalinux almalinux
archlinux arch_linux
gentoo linux
nixos nixos
nixos nixos
novell suse_linux
tritondatacenter smartos
redhat enterprise_linux

References

Frequently Asked Questions

What is CVE-2024-12084? +
A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-12084? +
CVE-2024-12084 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2024-12084? +
CVE-2024-12084 affects products from almalinux, archlinux, gentoo, nixos, novell, redhat, samba, tritondatacenter, specifically: almalinux, arch_linux, enterprise_linux, linux, nixos, rsync, smartos, suse_linux. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-12084? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2024-12084 — free, no signup required.