LiveActive security incident?Get immediate response
CVE Record

CVE-2023-29449: Limited control of resource utilization in JS preprocessing

JavaScript preprocessing, webhooks and global scripts can cause uncontrolled CPU, memory, and disk I/O utilization. Preprocessing/webhook/global script configuration and testing are only available to Administrative roles (Admin and Superadmin). Administrative privileges should be typically granted to users who need to perform tasks that require more control over the system. The security risk is limited because not all users have this level of access.

MediumCVSS 5.9Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Zabbix availability risk. Certain JavaScript preprocessing, webhook, and global script features can consume excessive CPU, memory, or disk I/O. The sources say configuration and testing are limited to Admin and Superadmin roles, which reduces broad user exposure but still matters where admin accounts are numerous or weakly governed.

Executive priority

Treat as a moderate operational resilience issue. Prioritize review if Zabbix monitors critical infrastructure, has many administrators, or lacks strong admin account controls. No source-provided evidence supports emergency active-exploitation response.

Technical view

CVE-2023-29449 maps to CWE-400: uncontrolled resource consumption. The affected Zabbix feature areas are JavaScript preprocessing, webhooks, and global scripts. The CVSS score is 5.9, with high availability impact and no confidentiality or integrity impact. Source text limits risky configuration and testing to Administrative roles.

Likely exposure

Exposure is most likely in Zabbix deployments running the listed affected version families where Admin or Superadmin users can configure or test JavaScript preprocessing, webhooks, or global scripts.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The risk appears tied to privileged Zabbix functionality rather than ordinary user access, so insider misuse, compromised admin accounts, or unsafe admin-created scripts are the main concern.

Researcher notes

The source bundle identifies affected Zabbix versions but does not include fixed versions or detailed patch notes. There is also tension between the CVSS vector showing PR:N and the description stating Administrative-role access is required for configuration/testing. Validate against vendor guidance before final exposure scoring.

Mitigation direction

  • Check Zabbix and distribution advisories for fixed versions or package updates.
  • Restrict Admin and Superadmin roles to users who require script configuration privileges.
  • Audit JavaScript preprocessing, webhook, and global script configurations for resource-intensive behavior.
  • Monitor Zabbix hosts for abnormal CPU, memory, and disk I/O spikes.
  • Review administrative account security, including MFA and least-privilege role assignment.

Validation and detection

  • Inventory Zabbix versions against the affected version list in the CVE record.
  • Confirm whether vulnerable feature areas are used in production.
  • Review Admin and Superadmin membership for unnecessary privileged accounts.
  • Check vendor or Debian package status for applied security updates.
  • Correlate Zabbix server performance logs with recent script configuration or testing activity.
Prepared
Confidence
medium
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-400: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-29449 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H2.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.9Medium
CVSS 3.1 vector shape for CVE-2023-29449Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ZabbixZabbix4.4.4, 5.0.0alpha1, 5.2.0alpha1, 5.4.0alpha1, 6.0.0alpha1, 6.2.0alpha1, 6.4.0alpha1unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-400 · source CWE mapping

Uncontrolled Resource Consumption

Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.