libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
Link | Tags |
---|---|
https://bugzilla.gnome.org/show_bug.cgi?id=772726 | patch vdb entry third party advisory issue tracking |
https://github.com/lsh123/xmlsec/issues/43 | patch third party advisory exploit |
https://usn.ubuntu.com/3739-1/ | third party advisory vendor advisory |
https://security.gentoo.org/glsa/201711-01 | third party advisory vendor advisory |
http://www.securityfocus.com/bid/94347 | third party advisory vdb entry |
https://usn.ubuntu.com/3739-2/ | third party advisory vendor advisory |
https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html | mailing list |