CVE-2023-24021

modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.

El manejo incorrecto de los bytes '\0' en las cargas de archivos en ModSecurity anteriores a 2.9.7 puede permitir omisiones del Firewall de aplicaciones web y sobrelecturas del búfer en el Firewall de aplicaciones web al ejecutar reglas que leen la colección FILES_TMP_CONTENT.

A vulnerability was found in ModSecurity. This issue occurs when FILES_TMP_CONTENT lacks complete content, which can lead to a Web Application Firewall bypass.

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-01-20 CVE Reserved
2023-01-20 CVE Published
2024-08-02 CVE Updated
2024-08-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak')

CAPEC

References (9)

URL	Tag	Source
https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.7	Release Notes
https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/SpiderLabs/ModSecurity/pull/2857	2023-11-07
https://github.com/SpiderLabs/ModSecurity/pull/2857/commits/4324f0ac59f8225aa44bc5034df60dbeccd1d334	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4QLOHCXWTQ	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76DURSLS4XI	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDOUFDGIFJKL	2023-11-07
https://access.redhat.com/security/cve/CVE-2023-24021	2023-08-15
https://bugzilla.redhat.com/show_bug.cgi?id=2163615	2023-08-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Trustwave Search vendor "Trustwave"		Modsecurity Search vendor "Trustwave" for product "Modsecurity"				< 2.9.7 Search vendor "Trustwave" for product "Modsecurity" and version " < 2.9.7"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected