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-rw-r--r--dhcpv4/ztp/ztp.go3
-rw-r--r--dhcpv4/ztp/ztp_test.go1
2 files changed, 4 insertions, 0 deletions
diff --git a/dhcpv4/ztp/ztp.go b/dhcpv4/ztp/ztp.go
index b96c8ae..3a66c4e 100644
--- a/dhcpv4/ztp/ztp.go
+++ b/dhcpv4/ztp/ztp.go
@@ -79,6 +79,9 @@ func parseV4VendorClass(packet *dhcpv4.DHCPv4) (*VendorData, error) {
return nil, errVendorOptionMalformed
}
} else {
+ if len(vc) == sepIdx+1 {
+ return nil, errVendorOptionMalformed
+ }
vd.Serial = vc[sepIdx+1:]
vc = vc[:sepIdx]
}
diff --git a/dhcpv4/ztp/ztp_test.go b/dhcpv4/ztp/ztp_test.go
index 40d4754..3fdb951 100644
--- a/dhcpv4/ztp/ztp_test.go
+++ b/dhcpv4/ztp/ztp_test.go
@@ -40,6 +40,7 @@ func TestParseV4VendorClass(t *testing.T) {
},
{name: "juniperNoSerial", vc: "Juniper-qfx10008", fail: true},
{name: "juniperInvalid", vc: "Juniper-", fail: true},
+ {name: "juniperInvalid2", vc: "Juniper-qfx99999-", fail: true},
{
name: "zpe",
vc: "ZPESystems:NSC:001234567",