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Modsecurity CVE-2023-38285

HIGH
Inefficient Algorithmic Complexity (CWE-407)
2023-07-26 cve@mitre.org
7.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V2 - Validation and Business Logic Algorithmic complexity limits
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.8% exploitation probability (EPSS)

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AnalysisAI

Trustwave ModSecurity 3.x before 3.0.10 has Inefficient Algorithmic Complexity. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-407. Trustwave ModSecurity 3.x before 3.0.10 has Inefficient Algorithmic Complexity. Affected products include: Owasp Modsecurity. Version information: before 3.0.10.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

Trustwave ModSecurity 3.x before 3.0.10 has Inefficient Algorithmic Complexity.

Threat Intelligence Overview

EPSS Score
0.8%
Top 49% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.8%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*
CVE-2025-27110 HIGH POC
7.9 Feb 25

Libmodsecurity is one component of the ModSecurity v3 project. Rated high severity (CVSS 7.9), this vulnerability is rem

CVE-2025-48866 HIGH POC
7.5 Jun 02

ModSecurity versions prior to 2.9.10 contain a denial of service vulnerability in the `sanitiseArg` and `sanitizeArg` ac

CVE-2021-42717 HIGH POC
7.5 Dec 07

ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Rated high severity (CVSS 7.5), this vulnerabi

CVE-2020-15598 HIGH POC
7.5 Oct 06

Trustwave ModSecurity 3.x through 3.0.4 allows denial of service via a special request. Rated high severity (CVSS 7.5),

CVE-2019-13464 HIGH POC
7.5 Jul 09

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) 3.0.2. Rated high severity (CVSS 7.5), this vulnerabili

CVE-2012-4528 MEDIUM POC
5.0 Dec 28

The mod_security2 module before 2.7.0 for the Apache HTTP Server allows remote attackers to bypass rules, and deliver ar

CVE-2018-13065 MEDIUM POC
6.1 Jul 03

ModSecurity 3.0.0 has XSS via an onerror attribute of an IMG element. Rated medium severity (CVSS 6.1), this vulnerabili

CVE-2013-2765 MEDIUM POC
5.0 Jul 15

The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NUL

CVE-2019-11391 MEDIUM POC
5.3 Apr 21

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. Rated medium severity (CVSS 5.3), this v

CVE-2019-11390 MEDIUM POC
5.3 Apr 21

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. Rated medium severity (CVSS 5.3), this v

CVE-2019-11389 MEDIUM POC
5.3 Apr 21

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. Rated medium severity (CVSS 5.3), this v

CVE-2019-11388 MEDIUM POC
5.3 Apr 21

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. Rated medium severity (CVSS 5.3), this v

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