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Fix ASN1_TYPE_cmp

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Fix segmentation violation when ASN1_TYPE_cmp is passed a boolean type. This
can be triggered during certificate verification so could be a DoS attack
against a client or a server enabling client authentication.

CVE-2015-0286

(Imported from upstream's e677e8d13595f7b3287f8feef7676feb301b0e8a.)

Change-Id: I5faefc190568504bb5895ed9816a6d80432cfa45
Reviewed-on: https://boringssl-review.googlesource.com/4048
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
David Benjamin 2015-03-19 15:03:10 -04:00 committed by Adam Langley
parent 61c0d4e8b2
commit 7a8e62dbd9
1 changed files with 3 additions and 0 deletions
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3
crypto/asn1/a_type.c
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@ -125,6 +125,9 @@ int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b)
case V_ASN1_NULL:
result = 0; /* They do not have content. */
break;
case V_ASN1_BOOLEAN:
result = a->value.boolean - b->value.boolean;
break;
case V_ASN1_INTEGER:
case V_ASN1_NEG_INTEGER:
case V_ASN1_ENUMERATED: