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api: disallow virDomainManagedSaveDefineXML on read-only connections

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The virDomainManagedSaveDefineXML can be used to alter the domain's
config used for managedsave or even execute arbitrary emulator binaries.
Forbid it on read-only connections.

Fixes: CVE-2019-10166
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit db0b78457f)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Ján Tomko 2019-06-14 09:14:53 +02:00
parent 1f8129c5db
commit d9a1f3deba
1 changed files with 1 additions and 0 deletions
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src/libvirt-domain.c
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@ -9424,6 +9424,7 @@ virDomainManagedSaveDefineXML(virDomainPtr domain, const char *dxml,
virCheckDomainReturn(domain, -1);
conn = domain->conn;
virCheckReadOnlyGoto(conn->flags, error);
if (conn->driver->domainManagedSaveDefineXML) {
int ret;