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api: disallow virConnect*HypervisorCPU on read-only connections

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These APIs can be used to execute arbitrary emulators.
Forbid them on read-only connections.

Fixes: CVE-2019-10168
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit bf6c2830b6c338b1f5699b095df36f374777b291)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Ján Tomko 2019-06-14 09:17:39 +02:00
parent 38a16f7867
commit fc30929ffd
1 changed files with 2 additions and 0 deletions
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2
src/libvirt-host.c
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@ -1041,6 +1041,7 @@ virConnectCompareHypervisorCPU(virConnectPtr conn,
virCheckConnectReturn(conn, VIR_CPU_COMPARE_ERROR); virCheckConnectReturn(conn, VIR_CPU_COMPARE_ERROR);
virCheckNonNullArgGoto(xmlCPU, error); virCheckNonNullArgGoto(xmlCPU, error);
virCheckReadOnlyGoto(conn->flags, error);
if (conn->driver->connectCompareHypervisorCPU) { if (conn->driver->connectCompareHypervisorCPU) {
int ret; int ret;
@ -1234,6 +1235,7 @@ virConnectBaselineHypervisorCPU(virConnectPtr conn,
virCheckConnectReturn(conn, NULL); virCheckConnectReturn(conn, NULL);
virCheckNonNullArgGoto(xmlCPUs, error); virCheckNonNullArgGoto(xmlCPUs, error);
virCheckReadOnlyGoto(conn->flags, error);
if (conn->driver->connectBaselineHypervisorCPU) { if (conn->driver->connectBaselineHypervisorCPU) {
char *cpu; char *cpu;