X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/b83cb1d9f5ad1bc3eab332a75ecd958d63610ce9..41122048b924ffa16ef8e1f77730f15b455733b0:/doc/security.mdwn

diff --git a/doc/security.mdwn b/doc/security.mdwn
index 939d65d01..ba3eac187 100644
--- a/doc/security.mdwn
+++ b/doc/security.mdwn
@@ -417,3 +417,13 @@ attack.
 intrigeri discovered this problem on 12 Nov 2008 and a patch put in place
 later that day, in version 2.70. The fix was backported to testing as version
 2.53.3, and to stable as version 1.33.7.
+
+## Insufficient blacklisting in teximg plugin
+
+Josh Tripplet discovered on 28 Aug 2009 that the teximg plugin's
+blacklisting of insecure TeX commands was insufficient; it could be
+bypassed and used to read arbitrary files. This was fixed by
+enabling TeX configuration options that disallow unsafe TeX commands.
+The fix was released on 30 Aug 2009 in version 3.1415926, and was
+backported to stable in version 2.53.4. If you use the teximg plugin,
+I recommend upgrading.