From 2c22954f99a70ed654e4116a18f433afa24d41c5 Mon Sep 17 00:00:00 2001 From: Erik Skultety Date: Thu, 4 Dec 2014 14:37:09 +0100 Subject: [PATCH] util: check for an illegal character in a XML namespace prefix When user tries to insert element metadata providing a namespace declaration as well, currently we insert the element without any validation check for XML prefix (if provided). The next VM start would then fail with parse error. This patch fixes this issue by adding a call to xmlValidateNCName function to check for illegal characters in the prefix. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1143921 --- src/util/virxml.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/util/virxml.c b/src/util/virxml.c index 7f591fb4f1..93f8590cde 100644 --- a/src/util/virxml.c +++ b/src/util/virxml.c @@ -1066,6 +1066,12 @@ virXMLInjectNamespace(xmlNodePtr node, { xmlNsPtr ns; + if (xmlValidateNCName((const unsigned char *)key, 1) != 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("failed to validate prefix for a new XML namespace")); + return -1; + } + if (!(ns = xmlNewNs(node, (const unsigned char *)uri, (const unsigned char *)key))) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("failed to create a new XML namespace")); -- GitLab