CVE-2024-38475
Apache HTTP Server Improper Escaping of Output Vulnerability - [Actively Exploited]
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.
INFO
Published Date :
July 1, 2024, 7:15 p.m.
Last Modified :
May 2, 2025, 3:43 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Apache HTTP Server contains an improper escaping of output vulnerability in mod_rewrite that 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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://httpd.apache.org/security/vulnerabilities_24.html ; https://nvd.nist.gov/vuln/detail/CVE-2024-38475
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the Apache HTTP Server to version 2.4.60 or later.
- Apply the appropriate patch or update according to vendor guidance.
Public PoC/Exploit Available at Github
CVE-2024-38475 has a 16 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-38475.
| URL | Resource |
|---|---|
| https://httpd.apache.org/security/vulnerabilities_24.html | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20240712-0001/ | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2024/07/01/8 | Third Party Advisory |
| https://github.com/apache/httpd/commit/9a6157d1e2f7ab15963020381054b48782bc18cf | Patch |
| https://httpd.apache.org/security/vulnerabilities_24.html | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20240712-0001/ | Third Party Advisory |
| https://www.blackhat.com/us-24/briefings/schedule/index.html#confusion-attacks-exploiting-hidden-semantic-ambiguity-in-apache-http-server-pre-recorded-40227 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-38475 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-38475
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
A tool written in Go that queries CVE information using CPE (Common Platform Enumeration) as input, with support for library integration（使用go实现的一个根据cpe查询cve信息的工具，支持库调用）
Go
CVE-2024-38475 Scanner using FFUF + Seclists
Shell
None
Python
None
Python
None
HTML Python Shell
Accélération de la vitesse de scan de ports en combinant Nmap & Masscan
Shell
None
Alat sederhana Uji Kerentanan Server HTTP Apache
Python
A repo for output of an intrusion prediction project
Jupyter Notebook
exploit CVE-2024-38475(mod_rewrite weakness with filesystem path matching)
Python
Apache Web Server Vulnerabilities list
apache cve vulnerabilities
CISA Bot is a GitHub bot that automatically monitors the Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. When new vulnerabilities are published in the KEV, the bot creates GitHub issues in this repository with detailed information about each vulnerability.
Python
Apache HTTP Server Vulnerability Testing Tool | PoC for CVE-2024-38472 , CVE-2024-39573 , CVE-2024-38477 , CVE-2024-38476 , CVE-2024-38475 , CVE-2024-38474 , CVE-2024-38473 , CVE-2023-38709
apache apache2 cve-2023-3870 cve-2024-38472 cve-2024-38473 cve-2024-38474 cve-2024-38475 cve-2024-38476 cve-2024-38477 cve-2024-39573
Python
None
Python
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-38475 vulnerability anywhere in the article.
-
BleepingComputer
SonicWall urges admins to patch critical RCE flaw in SMA 100 devices
SonicWall urges customers to patch SMA 100 series appliances against a critical authenticated arbitrary file upload vulnerability that can let attackers gain remote code execution. The security flaw ( ... Read more
-
Daily CyberSecurity
SonicWall SMA Devices Under Attack: UNC6148 Deploys OVERSTEP Rootkit for Persistent Access
Google’s Threat Intelligence Group (GTIG) uncovers a stealthy, sophisticated campaign led by a financially motivated actor tracked as UNC6148. This campaign targets end-of-life SonicWall Secure Mobile ... Read more
-
Ars Technica
Google finds custom backdoor being installed on SonicWall network devices
Researchers from the Google Threat Intelligence Group said that hackers are compromising SonicWall Secure Mobile Access (SMA) appliances, which sit at the edge of enterprise networks and manage and se ... Read more
-
Help Net Security
SonicWall SMA devices persistently infected with stealthy OVERSTEP backdoor and rootkit
Unknown intruders are targeting fully patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances and deploying a novel, persistent backdoor / rootkit, analysts with Google’s Threat ... Read more
-
BleepingComputer
SonicWall SMA devices hacked with OVERSTEP rootkit tied to ransomware
A threat actor has been deploying a previously unseen malware called OVERSTEP that modifies the boot process of fully-patched but no longer supported SonicWall Secure Mobile Access appliances. The bac ... Read more
-
The Register
Crims hijacking fully patched SonicWall VPNs to deploy stealthy backdoor and rootkit
Unknown miscreants are exploiting fully patched, end-of-life SonicWall VPNs to deploy a previously unknown backdoor and rootkit, likely for data theft and extortion, according to Google's Threat Intel ... Read more
-
Google Cloud
Ongoing SonicWall Secure Mobile Access (SMA) Exploitation Campaign using the OVERSTEP Backdoor
Written by: Josh Goddard, Zander Work, Dimiter Andonov Introduction Google Threat Intelligence Group (GTIG) has identified an ongoing campaign by a suspected financially-motivated threat actor we trac ... Read more
-
The Hacker News
UNC6148 Backdoors Fully-Patched SonicWall SMA 100 Series Devices with OVERSTEP Rootkit
A threat activity cluster has been observed targeting fully-patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances as part of a campaign designed to drop a backdoor called OVER ... Read more
-
The Hacker News
HPE Issues Security Patch for StoreOnce Bug Allowing Remote Authentication Bypass
Hewlett Packard Enterprise (HPE) has released security updates to address as many as eight vulnerabilities in its StoreOnce data backup and deduplication solution that could result in an authenticatio ... Read more
-
europa.eu
Cyber Brief 25-06 - May 2025
Cyber Brief (May 2025)June 3, 2025 - Version: 1TLP:CLEARExecutive summaryWe analysed 328 open source reports for this Cyber Brief1.Relating to cyber policy and law enforcement, in Europe, seven EU Mem ... Read more
-
The Hacker News
SonicWall Patches 3 Flaws in SMA 100 Devices Allowing Attackers to Run Code as Root
Network Security / Vulnerability SonicWall has released patches to address three security flaws affecting SMA 100 Secure Mobile Access (SMA) appliances that could be fashioned to result in remote code ... Read more
-
Help Net Security
Yet another SonicWall SMA100 vulnerability exploited in the wild (CVE-2025-32819)
SonicWall has fixed multiple vulnerabilities affecting its SMA100 Series devices, one of which (CVE-2025-32819) appears to be a patch bypass for an arbitrary file delete vulnerability that was exploit ... Read more
-
BleepingComputer
SonicWall urges admins to patch VPN flaw exploited in attacks
SonicWall has urged its customers to patch three security vulnerabilities affecting its Secure Mobile Access (SMA) appliances, one of them tagged as exploited in attacks. Discovered and reported by Ra ... Read more
-
Dark Reading
CISA Warns 2 SonicWall Vulnerabilities Under Active Exploitation
Source: ktdesign via Alamy Stock PhotoNEWS BRIEFCISA added two older SonicWall bugs to the Known Exploited Vulnerabilities (KEV) catalog, marking the latest threat activity targeting the network secur ... Read more
-
Cyber Security News
New SonicBoom Attack Allows Bypass of Authentication for Admin Access
A critical new attack chain, dubbed “SonicBoom,” that enables remote attackers to bypass authentication and seize administrative control over enterprise appliances, including SonicWall Secure Mobile A ... Read more
-
Daily CyberSecurity
SonicWall Exploit Chain Exposes Admin Hijack Risk via CVE-2023-44221 and CVE-2024-38475
Image: watchTowr A newly exploit chain targeting SonicWall’s Secure Mobile Access (SMA) appliances has been released. Published by watchTowr Labs, the technical disclosure outlines how two distinct vu ... Read more
-
The Register
Microsoft tries to knife passwords once and for all - at least for consumers
Infosec In Brief Microsoft has decided to push its consumer customers to dump password in favor of passkeys. The software giant announced the move Thursday, May 1, traditionally known as "World Passwo ... Read more
-
Help Net Security
Week in review: Critical SAP NetWeaver flaw exploited, RSAC 2025 Conference
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: RSAC 2025 Conference RSAC 2025 Conference took place at the Moscone Center in San Francisco. Check out ... Read more
-
Hackread - Latest Cybersecurity, Hacking News, Tech, AI & Crypto
watchTowr Warns of Active Exploitation of SonicWall SMA 100 Devices
watchTowr reveals active exploitation of SonicWall SMA 100 vulnerabilities (CVE-2024-38475 & CVE-2023-44221) potentially leading to full system takeover and session hijacking. Learn about affected mod ... Read more
-
The Cyber Express
CISA Adds Two New Exploited Vulnerabilities to Its Catalog: CVE-2024-38475 and CVE-2023-44221
The Cybersecurity and Infrastructure Security Agency (CISA) recently updated its Known Exploited Vulnerabilities (KEV) Catalog, adding two vulnerabilities, CVE-2024-38475 and CVE-2023-44221, that are ... Read more
The following table lists the changes that have been made to the
CVE-2024-38475 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 02, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (excluding) 2.4.60 Added CPE Configuration OR *cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:* Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/07/01/8 Types: Third Party Advisory Added Reference Type CVE: https://github.com/apache/httpd/commit/9a6157d1e2f7ab15963020381054b48782bc18cf Types: Patch Added Reference Type Apache Software Foundation: https://httpd.apache.org/security/vulnerabilities_24.html Types: Vendor Advisory Added Reference Type CVE: https://httpd.apache.org/security/vulnerabilities_24.html Types: Vendor Advisory Added Reference Type Apache Software Foundation: https://security.netapp.com/advisory/ntap-20240712-0001/ Types: Third Party Advisory Added Reference Type CVE: https://security.netapp.com/advisory/ntap-20240712-0001/ Types: Third Party Advisory Added Reference Type CVE: https://www.blackhat.com/us-24/briefings/schedule/index.html#confusion-attacks-exploiting-hidden-semantic-ambiguity-in-apache-http-server-pre-recorded-40227 Types: Third Party Advisory -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
May. 02, 2025
Action Type Old Value New Value Added Date Added 2025-05-01 Added Due Date 2025-05-22 Added Vulnerability Name Apache HTTP Server Improper Escaping of Output Vulnerability Added Required Action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2024/07/01/8 Added Reference https://github.com/apache/httpd/commit/9a6157d1e2f7ab15963020381054b48782bc18cf Added Reference https://httpd.apache.org/security/vulnerabilities_24.html Added Reference https://security.netapp.com/advisory/ntap-20240712-0001/ Added Reference https://www.blackhat.com/us-24/briefings/schedule/index.html#confusion-attacks-exploiting-hidden-semantic-ambiguity-in-apache-http-server-pre-recorded-40227 -
CVE Modified by [email protected]
Jul. 12, 2024
Action Type Old Value New Value Added Reference Apache Software Foundation https://security.netapp.com/advisory/ntap-20240712-0001/ [No types assigned] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 08, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N -
CVE Received by [email protected]
Jul. 01, 2024
Action Type Old Value New Value Added 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. Added Reference Apache Software Foundation https://httpd.apache.org/security/vulnerabilities_24.html [No types assigned] Added CWE Apache Software Foundation CWE-116