X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/fbfcea89f8e06426c73ab8ea369ca4cdc566db6f..4729ff0812c1f3d06d98524e2fec232d3bf90513:/doc/security.mdwn?ds=inline

diff --git a/doc/security.mdwn b/doc/security.mdwn
index 99f40d3f1..055e1d006 100644
--- a/doc/security.mdwn
+++ b/doc/security.mdwn
@@ -110,7 +110,7 @@ runs ikiwiki to update a given wiki. The wrapper can in turn be made suid,
 for example to be used in a [[post-commit]] hook by people who cannot write
 to the html pages, etc.
 
-If the wrapper script is made suid, then any bugs in this wrapper would be
+If the wrapper program is made suid, then any bugs in this wrapper would be
 security holes. The wrapper is written as securely as I know how, is based
 on code that has a history of security use long before ikiwiki, and there's
 been no problem yet.
@@ -178,7 +178,8 @@ the same standards as the rest of ikiwiki, but with that said, here are
 some security notes for them.
 
 * The [[plugins/img]] plugin assumes that imagemagick/perlmagick are secure
-  from malformed image attacks. Imagemagick has had security holes in the
+  from malformed image attacks for at least the formats listed in
+  `img_allowed_formats`. Imagemagick has had security holes in the
   past. To be able to exploit such a hole, a user would need to be able to
   upload images to the wiki.
 
@@ -484,14 +485,49 @@ for information disclosure via symlinks. ([[!cve CVE-2011-1408]])
 
 This hole was discovered on 8 June 2011 and fixed the same day with
 the release of ikiwiki 3.20110608. Note that the fix is dependant on
-a version of su that has a similar hole fixed; [[!debbug 628843]]
-tracks fixing the hole in Debian's su. An upgrade is a must for any
-sites that have `ikiwiki-update-wikilist` installed suid (not the default),
-and whose admins run `ikiwiki-mass-rebuild`.
+a version of su that has a similar hole fixed. Version 4.1.5 of the shadow
+package contains the fixed su; [[!debbug 628843]] tracks fixing the hole in
+Debian. An upgrade is a must for any sites that have `ikiwiki-update-wikilist`
+installed suid (not the default), and whose admins run `ikiwiki-mass-rebuild`.
 
 ## javascript insertion via meta tags
 
 Raúl Benencia discovered an additional XSS exposure in the meta plugin.
+([[!cve CVE-2012-0220]])
 
 This hole was discovered on 16 May 2012 and fixed the same day with
-the release of ikiwiki 3.20120516.
+the release of ikiwiki 3.20120516. A fix was backported to Debian squeeze,
+as version 3.20100815.9. An upgrade is recommended for all sites.
+
+## XSS via openid selector
+
+Raghav Bisht discovered this XSS in the openid selector. ([[!cve CVE-2015-2793]])
+
+The hole was reported on March 24th, a fix was developed on March 27th,
+and the fixed version 3.20150329 was released on the 29th. A fix was backported
+to Debian jessie as version 3.20141016.2 and to Debian wheezy as version
+3.20120629.2. An upgrade is recommended for sites using CGI and openid.
+
+## XSS via error messages
+
+CGI error messages did not escape HTML meta-characters, potentially
+allowing an attacker to carry out cross-site scripting by directing a
+user to a URL that would result in a crafted ikiwiki error message. This
+was discovered on 4 May by the ikiwiki developers, and the fixed version
+3.20160506 was released on 6 May. The same fixes were backported to Debian
+8 "jessie" in version 3.20141016.3. A backport to Debian 7 "wheezy" is
+in progress.
+
+An upgrade is recommended for sites using
+the CGI. ([[!cve CVE-2016-4561]], OVE-20160505-0012)
+
+## ImageMagick CVE-2016–3714 ("ImageTragick")
+
+ikiwiki 3.20160506 and 3.20141016.3 attempt to mitigate
+[[!cve CVE-2016-3714]], and any
+future ImageMagick vulnerabilities that resemble it, by restricting the
+image formats that the [[ikiwiki/directive/img]] directive is willing to
+resize. An upgrade is recommended for sites where an untrusted user is
+able to attach images. Upgrading ImageMagick to a version where
+CVE-2016-3714 has been fixed is also recommended, but at the time of
+writing no such version is available.