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CVE-2024-12084

Rsync: heap buffer overflow in rsync due to improper checksum length handling

Published: Jan 15, 2025Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-122
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
71.8%
Top 0.7%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-122CWE-787

Affected Products

rsyncsamba
On-prem
OSS Libraries / generic-library
almalinuxalmalinux
On-prem
Operating Systems / linux-distro
arch linuxarchlinux
On-prem
Operating Systems / linux-distro
linuxgentoo
On-premOS
Operating Systems / unix-bsd
nixosnixos
On-prem
Operating Systems / linux-distro
sambaoss-projectDEOperating Systems
almalinuxoss-projectOperating Systemsaka alma linux
archlinuxoss-projectOperating Systemsaka arch linux
gentoooss-projectUSOperating Systemsaka gentoo linux
nixososs-projectOperating Systems
and 17 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHBA-2025:6470
access.redhat.com
https://access.redhat.com/security/cve/CVE-2024-12084
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2330527
bugzilla.redhat.com
and 19 more references View all →

Timeline

Published
Jan 15, 2025
Last Updated
Nov 3, 2025

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