Overview
Recently, NSFOCUS CERT found that Apache has issued an official security notice to fix multiple Apache HTTP Server vulnerabilities. Affected users should take protective measures as soon as possible.
Apache HTTP Server Request Smuggling Vulnerability (CVE-2023-25690):
When mod_ When proxy is enabled with some form of RewriteRule or ProxyPassMatch, a non-specific pattern will match the user’s partial request target (URL). Remote attackers can bypass the access control in the proxy server by constructing malicious HTTP request packets, and proxy the unexpected URL to the existing source server, resulting in cache poisoning.
Apache HTTP Server Response Smuggling Vulnerability (CVE-2023-27522):
Due to the misconfiguration in mod_ proxy_ uwsgi, remote attackers can use this vulnerability to inject arbitrary HTTP headers and cause the server to return a split response. An attacker can further exploit this vulnerability, which may eventually lead to web cache poisoning or cross-site scripting attacks, and obtain sensitive information.
Reference link: https://httpd.apache.org/security/vulnerabilities_24.html
Scope of Impact
Affected version
CVE-2023-25690:
- 2.4.0 <= Apache HTTP Server <= 2.4.55
CVE-2023-27522:
- 2.4.30 <= Apache HTTP Server <= 2.4.55
Unaffected version
CVE-2023-25690:
- Apache HTTP Server >= 2.4.56
CVE-2023-27522:
- Apache HTTP Server >= 2.4.56
Vulnerability Detection
Relevant users can determine whether the current application is at risk through version detection.
Use the following command to view the current version of Apache HTTP Server:
httpd -v
If the current version is within the affected range, there may be security risks.
Statement
This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.
About NSFOCUS
NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.
NSFOCUS works with Fortune Global 500 companies, including four of the world’s five largest financial institutions, organizations in insurance, retail, healthcare, critical infrastructure industries as well as government agencies. NSFOCUS has technology and channel partners in more than 60 countries, is a member of both the Microsoft Active Protections Program (MAPP), and the Cloud Security Alliance (CSA).
A wholly owned subsidiary of NSFOCUS Technologies Group Co., Ltd., the company has operations in the Americas, Europe, the Middle East and Asia Pacific.
