CVE-2024-38474

Apache HTTP Server weakness with encoded question marks in backreferences

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in
directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.

Users are recommended to upgrade to version 2.4.60, which fixes this issue.

Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.

El problema de codificación de sustitución en mod_rewrite en Apache HTTP Server 2.4.59 y versiones anteriores permite al atacante ejecutar scripts en directorios permitidos por la configuración pero a los que no se puede acceder directamente mediante ninguna URL o divulgación de fuente de scripts destinados a ejecutarse únicamente como CGI. Se recomienda a los usuarios actualizar a la versión 2.4.60, que soluciona este problema. Algunas RewriteRules que capturan y sustituyen de forma insegura ahora fallarán a menos que se especifique el indicador de reescritura "UnsafeAllow3F".

A flaw was found in the mod_rewrite module of httpd. Due to a substitution encoding issue, specially crafted requests may allow an attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant only to be executed as CGI.

*Credits: Orange Tsai (@orange_8361) from DEVCORE

CVSS Scores

Red Hatv3.1 9.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-06-17 CVE Reserved
2024-07-01 CVE Published
2024-09-13 CVE Updated
2024-09-13 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-116: Improper Encoding or Escaping of Output

CAPEC

References (4)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20240712-0001

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://httpd.apache.org/security/vulnerabilities_24.html	2024-07-12
https://access.redhat.com/security/cve/CVE-2024-38474	2024-08-13
https://bugzilla.redhat.com/show_bug.cgi?id=2295013	2024-08-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Software Foundation Search vendor "Apache Software Foundation"		Apache HTTP Server Search vendor "Apache Software Foundation" for product "Apache HTTP Server"				>= 2.4.0 <= 2.4.59 Search vendor "Apache Software Foundation" for product "Apache HTTP Server" and version " >= 2.4.0 <= 2.4.59"		en		Affected