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Category Archives: Technical
Zoom Desktop Vulnerability for macOS
Update: Apple is now silently pushing out an update to remove the Zoom “hidden feature” so you will be please to know that the geeky removal is no longer necessary. Just make sure you have opted in to all recent … Continue reading
The Big RDP Vulnerability (CVE-2019-0708)
Microsoft have released a whole bunch of patches to fix security vulnerabilities this Tuesday (which is quite normal of course), but one unusual aspect was the release of a patch for older versions of Windows that do not normally get … Continue reading
Posted in Active Attacks, Technical
Tagged Attacks, CVE-2019-0708, RDP, Windows
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Apache: Reducing Information Leaked Through The Headers
Apache by default announces all sorts of information about itself when you make a connection to it :- $ lynx -head http://some-server-fqdn/ HTTP/1.1 302 Found Date: Thu, 31 May 2018 12:18:22 GMT Server: Apache/2.2.15 (CentOS) Location: https://t-oala-idp-01.iso.port.ac.uk/ Connection: close Content-Type: … Continue reading
Posted in Technical
Tagged Apache, Best Practice
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Apache: Disabling Directory Indexes
One of the features of Apache that can cause security issues (or at least those who audit security issues may complain about it) is the ability to produce a file listing of a directory if there is no index page … Continue reading
Posted in Technical
Tagged Apache, Best Practice
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Apache: Disable the ETag Header
By default, the Apache web server has an information disclosure vulnerability where the ETag header shows information about the file containing the object in question. This can contain an “i-node” value which in combination with the use of NFS can permit … Continue reading
Apache: Disabling TRACK and TRACE Methods
By default Apache supports a number of HTTP methods in addition to the ones we normally use – GET (to get objects) and PUSH (to push form data although you can send form data with GET too). These additional methods … Continue reading
Posted in Technical
Tagged Apache, Best Practice
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Apache: Blocking “Dangerous” Files
There are all sorts of “dangerous” files that can appear within a web server’s document root; some are merely potentially dangerous but some can be genuinely dangerous. For example, if someone uses an editor to change a .php file, it is … Continue reading
Processor Bugs: Meltdown and Spectre
There has been lots of stories relating to two new severe security vulnerabilities (one of which is in every Intel processor for over a decade); the trail of stories starts here. The details of the vulnerability are very highly technical … Continue reading
The New Mirai
According to one news report, a new version of Mirai has recently been released causing an increase in the number of scans against port 2323 and port 23. According to our firewall logs, the number of scans against tcp/2323 has … Continue reading
KRACKing Wireless
The latest big security exploit is a mechanism by which WPA2 secured wireless networks can be compromised to disclose previously encrypted traffic in the clear, and to insert malicious traffic. The original web site announcing the vulnerability can be found … Continue reading