meta: Security fix; don't allow alternative stylesheets to be added on pages where...

[git.ikiwiki.info.git] / doc / security.mdwn

diff --git a/doc/security.mdwn b/doc/security.mdwn
index 52d9d3dc0c4ee820a3a40ae79e7a5f16ad925999..2b387ac2322c1accdd57b9edca7c6b0f6c36c1b8 100644 (file)
--- a/doc/security.mdwn
+++ b/doc/security.mdwn
@@ -441,7 +441,7 @@ A fix was also backported to Debian etch, as version 2.53.5. I recommend
 upgrading to one of these versions if your wiki can be edited by third
 parties.
 
-## javascript insertation via insufficient htmlscrubbing of comments
+## javascript insertion via insufficient htmlscrubbing of comments
 
 Kevin Riggle noticed that it was not possible to configure
 `htmlscrubber_skip` to scrub comments while leaving unscubbed the text
@@ -454,7 +454,7 @@ preview or moderation of comments with such a configuration.
 These problems were discovered on 12 November 2010 and fixed the same
 hour with the release of ikiwiki 3.20101112. ([[!cve CVE-2010-1673]])
 
-## javascript insertation via insufficient checking in comments
+## javascript insertion via insufficient checking in comments
 
 Dave B noticed that attempting to comment on an illegal page name could be
 used for an XSS attack.
@@ -463,3 +463,14 @@ This hole was discovered on 22 Jan 2011 and fixed the same day with
 the release of ikiwiki 3.20110122. A fix was backported to Debian squeeze,
 as version 3.20100815.5. An upgrade is recommended for sites
 with the comments plugin enabled. ([[!cve CVE-2011-0428]])
+
+## possible javascript insertion via insufficient htmlscrubbing of alternate stylesheets
+
+Tango noticed that 'meta stylesheet` directives allowed anyone
+who could upload a malicious stylesheet to a site to add it to a
+page as an alternate stylesheet. In order to be exploited, the user
+would have to select the alternative stylesheet in their browser.
+
+This hole was discovered on 28 Mar 2011 and fixed the same hour with
+the release of ikiwiki 3.20110328. An upgrade is recommended for sites
+that have untrusted committers, or have the attachments plugin enabled.