Apache HTTP Server is a widely used open-source web server software that is designed to provide a secure and efficient environment for serving web content. It is available on most operating systems and is used by a large number of websites and web applications worldwide. It is easy to use, free to download, and can be customized to suit the needs of individual users. The Apache HTTP Server is highly reliable and scalable, making it a popular choice for web developers and users.
CVE-2016-4975 is a security vulnerability that was detected in Apache HTTP Server version 2.4.1 to 2.4.23 and 2.2.0 to 2.2.31. This particular vulnerability allowed for CRLF (Carriage Return Line Feed) injection, which made it possible for an attacker to insert arbitrary headers into the response of a web application. This, in turn, could enable HTTP response splitting attacks that might result in the stealing of sensitive data or the hijacking of a user's session.
When this vulnerability is exploited, an attacker can send manipulated HTTP headers that would allow them to insert arbitrary newlines or headers into the response of the server. This could lead to JavaScript injection, cookie theft or session hijacking, which would seriously compromise the security of the website. In the worst-case scenario, an attacker could gain complete control of the system and access confidential data.
In conclusion, it is essential to ensure that all systems and software are updated regularly to prevent vulnerabilities such as CVE-2016-4975. With the pro features of the s4e.io platform, web developers and users can gain instant access to information about vulnerabilities in their digital assets. They can proactively protect their website or web application by promptly addressing any vulnerabilities that are detected, thereby helping to minimize the risk of security breaches.
REFERENCES
- http://www.securityfocus.com/bid/105093
- https://httpd.apache.org/security/vulnerabilities_22.html#CVE-2016-4975
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-4975
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E
- https://security.netapp.com/advisory/ntap-20180926-0006/
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us
To protect against this vulnerability, the following precautions can be taken:
- Update Apache HTTP Server to version 2.4.25 or version 2.2.32, which includes a fix for the vulnerability.
- Scan the server using a vulnerability scanner to ensure that all software is up to date and secure.
- Implement strict input validation to ensure that user input is not being used to inject arbitrary headers.
- Configure firewalls to block traffic from suspicious IP addresses
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