HTTP: Apache CRLF Injection
This signature detects attempts to exploit a known vulnerability against Apache. A successful attack can lead to sensitive information disclosure.
Extended Description
Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).
Affected Products
Apache http_server
References
CVE: CVE-2016-4975
URL: https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-4975
Short Name
HTTP:APACHE:APACHE-CRLF-INJECT
Severity
Minor
Recommended
False
Recommended Action
Drop
Category
HTTP
Keywords
Apache CRLF CVE-2016-4975 Injection
Release Date
11/23/2022
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3650
False Positive
Unknown
Vendors
Apache