From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
Date: Fri, 14 Jun 2019 09:16:14 +0200
Subject: [PATCH] api: disallow virConnectGetDomainCapabilities on read-only
 connections
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This API can be used to execute arbitrary emulators.
Forbid it on read-only connections.

Fixes: CVE-2019-10167
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 8afa68bac0cf99d1f8aaa6566685c43c22622f26)
---
 src/libvirt-domain.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index f77fc23a3f..c500d6be36 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -11360,6 +11360,7 @@ virConnectGetDomainCapabilities(virConnectPtr conn,
     virResetLastError();
 
     virCheckConnectReturn(conn, NULL);
+    virCheckReadOnlyGoto(conn->flags, error);
 
     if (conn->driver->connectGetDomainCapabilities) {
         char *ret;