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CVE-2025-64344

Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer

Published: Nov 26, 2025Updated: Dec 3, 2025 Sources: CVE List NVD BDUCWE-121
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 79.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-121CWE-787

Affected Products

suricataOISF
On-premNetwork Device
Networking Infrastructure / firewall
РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
SuricataOpen Information Security Foundation
On-prem
Security Products / vuln-mgmt-scanner
suricataoisf
On-premNetwork Device
Networking Infrastructure / firewall
oisfoss-projectNetworking Infrastructureaka suricata, libhtp, suricata-update
ао «нтц ит роса»commercialRUOperating Systems
open information security foundationoss-projectSecurity Productsaka ofis, suricata, libhtp

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/OISF/suricata/security/advisories/GHSA-93fh-cgmc-w3rx
github.com
https://github.com/OISF/suricata/commit/e13fe6a90dba210a478148c4084f6f5db17c5b5a
github.com
https://github.com/OISF/suricata/security/advisories/GHSA-93fh-cgmc-w3rx
github.com
and 2 more references View all →

Timeline

Published
Nov 26, 2025
Last Updated
Dec 3, 2025

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