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-rw-r--r--lib/util/asn1.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/util/asn1.c b/lib/util/asn1.c
index 2a71f2f79d..21d4bd4308 100644
--- a/lib/util/asn1.c
+++ b/lib/util/asn1.c
@@ -221,10 +221,12 @@ bool ber_write_OID_String(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, const char *OID)
char *newp;
int i;
+ if (!isdigit(*p)) return false;
v = strtoul(p, &newp, 10);
if (newp[0] != '.') return false;
p = newp + 1;
+ if (!isdigit(*p)) return false;
v2 = strtoul(p, &newp, 10);
if (newp[0] != '.') return false;
p = newp + 1;
@@ -237,9 +239,12 @@ bool ber_write_OID_String(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, const char *OID)
i = 1;
while (*p) {
+ if (!isdigit(*p)) return false;
v = strtoul(p, &newp, 10);
if (newp[0] == '.') {
p = newp + 1;
+ /* check for empty last component */
+ if (!*p) return false;
} else if (newp[0] == '\0') {
p = newp;
} else {