This was reported on virt-manager issue tracker as it was possible to
provide `listen` attribute with properly escaped characters but libvirt
would format XML without escaping it.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
---
 src/conf/domain_conf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 6bb30c6f22..7ce49993b9 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -26303,7 +26303,7 @@ virDomainGraphicsListenDefFormat(virBuffer *buf,
           !(flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE)))) {
         /* address may also be set to show current status when type='network',
          * but we don't want to print that if INACTIVE data is requested. */
-        virBufferAsprintf(&attrBuf, " address='%s'", def->address);
+        virBufferEscapeString(&attrBuf, " address='%s'", def->address);
     }
 
     if (def->network &&
@@ -26392,7 +26392,7 @@ virDomainGraphicsListenDefFormatAddr(virBuffer *buf,
         return;
 
     if (glisten->address)
-        virBufferAsprintf(buf, " listen='%s'", glisten->address);
+        virBufferEscapeString(buf, " listen='%s'", glisten->address);
 }
 
 static void
-- 
2.48.1