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    Breaking into Ubuntu Server

    Scheduled Pinned Locked Moved IT Discussion
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    • scottalanmillerS
      scottalanmiller
      last edited by

       low: mod_log_config crash CVE-2014-0098
      
      A flaw was found in mod_log_config. A remote attacker could send a specific truncated cookie causing a crash. This crash would only be a denial of service if using a threaded MPM.
      
      Acknowledgements: This issue was reported by Rainer M Canavan
      Reported to security team: 25th February 2014
      Issue public: 17th March 2014
      Update Released: 26th March 2014
      Affects: 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
      
      moderate: mod_dav crash CVE-2013-6438
      
      XML parsing code in mod_dav incorrectly calculates the end of the string when removing leading spaces and places a NUL character outside the buffer, causing random crashes. This XML parsing code is only used with DAV provider modules that support DeltaV, of which the only publicly released provider is mod_dav_svn.
      
      Acknowledgements: This issue was reported by Ning Zhang & Amin Tora of Neustar
      Reported to security team: 10th December 2013
      Issue public: 17th March 2014
      Update Released: 26th March 2014
      Affects: 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
      
      1 Reply Last reply Reply Quote 1
      • scottalanmillerS
        scottalanmiller
        last edited by

         important: mod_cgid denial of service CVE-2014-0231
        
        A flaw was found in mod_cgid. If a server using mod_cgid hosted CGI scripts which did not consume standard input, a remote attacker could cause child processes to hang indefinitely, leading to denial of service.
        
        Acknowledgements: This issue was reported by Rainer Jung of the ASF
        Reported to security team: 16th June 2014
        Issue public: 14th July 2014
        Update Released: 3rd September 2014
        Affects: 2.2.27, 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
        
        low: HTTP Trailers processing bypass CVE-2013-5704
        
        HTTP trailers could be used to replace HTTP headers late during request processing, potentially undoing or otherwise confusing modules that examined or modified request headers earlier.
        
        This fix adds the "MergeTrailers" directive to restore legacy behavior.
        
        Acknowledgements: This issue was reported by Martin Holst Swende.
        Reported to security team: 6th September 2013
        Issue public: 19th October 2013
        Update Released: 3rd September 2014
        Affects: 2.2.27, 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
        
        moderate: mod_deflate denial of service CVE-2014-0118
        
        A resource consumption flaw was found in mod_deflate. If request body decompression was configured (using the "DEFLATE" input filter), a remote attacker could cause the server to consume significant memory and/or CPU resources. The use of request body decompression is not a common configuration.
        
        Acknowledgements: This issue was reported by Giancarlo Pellegrino and Davide Balzarotti
        Reported to security team: 19th February 2014
        Issue public: 14th July 2014
        Update Released: 3rd September 2014
        Affects: 2.2.27, 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
        
        moderate: mod_status buffer overflow CVE-2014-0226
        
        A race condition was found in mod_status. An attacker able to access a public server status page on a server using a threaded MPM could send a carefully crafted request which could lead to a heap buffer overflow. Note that it is not a default or recommended configuration to have a public accessible server status page.
        
        Acknowledgements: This issue was reported by Marek Kroemeke, AKAT-1 and 22733db72ab3ed94b5f8a1ffcde850251fe6f466 via HP ZDI
        Reported to security team: 30th May 2014
        Issue public: 14th July 2014
        Update Released: 3rd September 2014
        Affects: 2.2.27, 2.2.26, 2.2.25, 2.2.24, 2.2.23, 2.2.22, 2.2.21, 2.2.20, 2.2.19, 2.2.18, 2.2.17, 2.2.16, 2.2.15, 2.2.14, 2.2.13, 2.2.12, 2.2.11, 2.2.10, 2.2.9, 2.2.8, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.0
        
        1 Reply Last reply Reply Quote 1
        • IRJI
          IRJ
          last edited by

          Thanks @scottalanmiller , but I already saw those and known of them help me. XSS isn't possible when there is no website on the box. The apache service is all that is running. A DoS is nice for an attack, but it doesn't help me gain access.

          1 Reply Last reply Reply Quote 0
          • dafyreD
            dafyre
            last edited by

            What error do you get when trying to browse to it?

            Could it be the site is listening only on the IP address and not listening for any particular hostname?

            IRJI 1 Reply Last reply Reply Quote 0
            • IRJI
              IRJ @dafyre
              last edited by

              @dafyre said in Breaking into Ubuntu Server:

              What error do you get when trying to browse to it?

              Could it be the site is listening only on the IP address and not listening for any particular hostname?

              no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

              I did an http vuln scan and the only file it sees is index.html which is just the default page.

              dafyreD 1 Reply Last reply Reply Quote 0
              • dafyreD
                dafyre @IRJ
                last edited by

                @IRJ said in Breaking into Ubuntu Server:

                @dafyre said in Breaking into Ubuntu Server:

                What error do you get when trying to browse to it?

                Could it be the site is listening only on the IP address and not listening for any particular hostname?

                no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

                I did an http vuln scan and the only file it sees is index.html which is just the default page.

                Time to throw out Scott's favorite word: Red Herring ?

                IRJI BRRABillB stacksofplatesS 3 Replies Last reply Reply Quote 0
                • IRJI
                  IRJ @dafyre
                  last edited by

                  @dafyre said in Breaking into Ubuntu Server:

                  @IRJ said in Breaking into Ubuntu Server:

                  @dafyre said in Breaking into Ubuntu Server:

                  What error do you get when trying to browse to it?

                  Could it be the site is listening only on the IP address and not listening for any particular hostname?

                  no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

                  I did an http vuln scan and the only file it sees is index.html which is just the default page.

                  Time to throw out Scott's favorite word: Red Herring ?

                  There are plenty of decoys so it wouldn't surprise me.

                  1 Reply Last reply Reply Quote 0
                  • BRRABillB
                    BRRABill @dafyre
                    last edited by

                    @dafyre said in Breaking into Ubuntu Server:

                    @IRJ said in Breaking into Ubuntu Server:

                    @dafyre said in Breaking into Ubuntu Server:

                    What error do you get when trying to browse to it?

                    Could it be the site is listening only on the IP address and not listening for any particular hostname?

                    no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

                    I did an http vuln scan and the only file it sees is index.html which is just the default page.

                    Time to throw out Scott's favorite word: Red Herring ?

                    If you only knew how many times I've seen that already today.

                    1 Reply Last reply Reply Quote 2
                    • stacksofplatesS
                      stacksofplates @dafyre
                      last edited by

                      @dafyre said in Breaking into Ubuntu Server:

                      @IRJ said in Breaking into Ubuntu Server:

                      @dafyre said in Breaking into Ubuntu Server:

                      What error do you get when trying to browse to it?

                      Could it be the site is listening only on the IP address and not listening for any particular hostname?

                      no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

                      I did an http vuln scan and the only file it sees is index.html which is just the default page.

                      Time to throw out Scott's favorite word: Red Herring ?

                      There is nothing extra in the index.html?

                      No port knocking set up for another port?

                      IRJI 1 Reply Last reply Reply Quote 0
                      • IRJI
                        IRJ @stacksofplates
                        last edited by

                        @stacksofplates said in Breaking into Ubuntu Server:

                        @dafyre said in Breaking into Ubuntu Server:

                        @IRJ said in Breaking into Ubuntu Server:

                        @dafyre said in Breaking into Ubuntu Server:

                        What error do you get when trying to browse to it?

                        Could it be the site is listening only on the IP address and not listening for any particular hostname?

                        no error. Just a default page that says "It works!" This is the default page for this server. The web server software is running, but no content has been added yet.

                        I did an http vuln scan and the only file it sees is index.html which is just the default page.

                        Time to throw out Scott's favorite word: Red Herring ?

                        There is nothing extra in the index.html?

                        No port knocking set up for another port?

                        Not that I can see. I used Acunetix Web Vulnerability Scanner and it does a pretty good job of analyzing the files.

                        1 Reply Last reply Reply Quote 1
                        • stacksofplatesS
                          stacksofplates
                          last edited by

                          As an aside, this sounds like a really interesting test.

                          1 Reply Last reply Reply Quote 0
                          • MattSpellerM
                            MattSpeller
                            last edited by

                            I find that a slot and phillips #2 are enough for most.

                            Occasionally I have to break out the baseball bat or crowbar but those are really more for my pleasure than anything.

                            1 Reply Last reply Reply Quote 1
                            • stacksofplatesS
                              stacksofplates
                              last edited by

                              Did you figures it out? You've kind of inspired me. I kind of want to go through the OSCP now.

                              IRJI 1 Reply Last reply Reply Quote 0
                              • IRJI
                                IRJ @stacksofplates
                                last edited by

                                @stacksofplates said in Breaking into Ubuntu Server:

                                Did you figures it out? You've kind of inspired me. I kind of want to go through the OSCP now.

                                Yes I did figure it out. PM me and I can tell you the resolution.

                                1 Reply Last reply Reply Quote 0
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