macOS : macOS Server < 5.2 Multiple Vulnerabilities (httpoxy)
High Nessus Plugin ID 93813
SynopsisThe remote host is missing a security update for macOS Server.
DescriptionThe version of macOS Server (formerly known as Mac OS X Server) installed on the remote host is prior to 5.2. It is, therefore, affected by the following vulnerabilities :
- The Apache HTTP Server is affected by a man-in-the-middle vulnerability known as 'httpoxy' due to a failure to properly resolve namespace conflicts in accordance with RFC 3875 section 4.1.18. The HTTP_PROXY environment variable is set based on untrusted user data in the 'Proxy' header of HTTP requests. The HTTP_PROXY environment variable is used by some web client libraries to specify a remote proxy server. An unauthenticated, remote attacker can exploit this, via a crafted 'Proxy' header in an HTTP request, to redirect an application's internal HTTP traffic to an arbitrary proxy server where it may be observed or manipulated.
- Multiple unspecified flaws exist that are related to the RC4 algorithm that allow an unauthenticated, remote attacker to defeat cryptographic protection mechanisms.
SolutionUpgrade to macOS Server version 5.2 or later. Note that macOS Server version 5.2 is available only for macOS 10.12 or later.