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CVE-2024-38475

Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.

Basic Information

CVE State
PUBLISHED
Reserved Date
June 17, 2024
Published Date
July 01, 2024
Last Updated
February 13, 2025
Vendor
Apache Software Foundation
Product
Apache HTTP Server
Description
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected.  Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
Tags
apache cisa nuclei_scanner

CVSS Scores

CVSS v3.1

9.1 - CRITICAL

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

EPSS Score

Score
92.40% (Percentile: 99.71%) as of 2025-05-30

SSVC Information

Exploitation
none
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2025-05-01 00:00:00 UTC) Source

References

https://httpd.apache.org/security/vulnerabilities_24.html https://security.netapp.com/advisory/ntap-20240712-0001/

Known Exploited Vulnerability Information

Source Added Date
TheHackerNews 2025-05-01 09:07:18 UTC

Recent Mentions

Another day, another edge device being targeted - it’s a typical Thursday!In today’s blog post, we’re excited to share our previously private analysis of the now exploited in-the-wild N-day vulnerabilities affecting SonicWall’s SMA100 appliance. Over the last few months, our client

CISA Adds Two Known Exploited Vulnerabilities to Catalog

Source: All CISA Advisories • Published: 2025-05-01 12:00:00 UTC

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Vulnerability CVE-2023-44221 SonicWall SMA100 Appliances OS Command Injection Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-38475.yaml 2025-05-02 14:30:30 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

p0in7s/CVE-2024-38475

Type: github • Created: 2024-08-18 11:30:50 UTC • Stars: 9

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • Detected by Nuclei