CVE-2024-12084

critical

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.

References

https://kb.cert.org/vuls/id/952657

https://bugzilla.redhat.com/show_bug.cgi?id=2330527

https://access.redhat.com/security/cve/CVE-2024-12084

https://access.redhat.com/errata/RHBA-2025:6470

http://www.openwall.com/lists/oss-security/2025/01/14/6

https://www.bleepingcomputer.com/news/security/qnap-fixes-six-rsync-vulnerabilities-in-hbs-nas-backup-recovery-app/

https://www.openwall.com/lists/oss-security/2025/01/14/3

https://www.bleepingcomputer.com/news/security/over-660-000-rsync-servers-exposed-to-code-execution-attacks/

https://thehackernews.com/2025/01/google-cloud-researchers-uncover-flaws.html

https://github.com/Jerrythepro123/rsync_CVE

https://github.com/rxerium/CVE-2024-12084

https://www.kb.cert.org/vuls/id/952657

https://security.netapp.com/advisory/ntap-20250131-0002/

Details

Source: Mitre, NVD

Published: 2025-01-15

Updated: 2026-06-29

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.72059