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V-214269

The Apache web server must remove all export ciphers to protect the confidentiality and integrity of transmitted information.

Finding ID
AS24-U1-000900
Rule ID
SV-214269r612240_rule
Severity
Cat II
CCE
(None)
Group Title
SRG-APP-000439-WSR-000188
CCI
CCI-002418
Target Key
(None)
Documentable
No
Discussion

During the initial setup of a Transport Layer Security (TLS) connection to the Apache web server, the client sends a list of supported cipher suites in order of preference. The Apache web server will reply with the cipher suite it will use for communication from the client list. If an attacker can intercept the submission of cipher suites to the Apache web server and place, as the preferred cipher suite, a weak export suite, the encryption used for the session becomes easy for the attacker to break, often within minutes to hours. Configuring the Apache server with only strong ciphersuites, denying or disabling weak ciphersuites, will prevent this vulnerability.

Fix Text

Update the cipher specification string for all enabled SSLCipherSuite directives to include !EXPORT.

Check Content

Determine the location of the "HTTPD_ROOT" directory and the "httpd.conf" and "ssl.conf" files: Open the httpd.conf and ssl.conf file with an editor and search for the following uncommented directive: SSLCipherSuite For all enabled SSLCipherSuite directives, ensure the cipher specification string contains the kill cipher from list option for all export cipher suites, i.e., !EXPORT, which may be abbreviated !EXP as in the following example: Example: SSLCipherSuite="HIGH:MEDIUM:!MD5!EXP:!NULL:!LOW:!ADH If the SSLCipherSuite directive does not contain !EXPORT or !EXP or there are no enabled SSLCipherSuite directives, this is a finding.