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nghttpx: Ensure that cert serial does not exceed 20 bytes

This commit is contained in:
Tatsuhiro Tsujikawa 2019-01-05 10:03:44 +09:00
parent dbb5f00d68
commit 11d0533cfc
1 changed files with 1 additions and 1 deletions
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2
src/shrpx_tls.cc
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@ -2042,7 +2042,7 @@ StringRef get_x509_serial(BlockAllocator &balloc, X509 *x) {
auto sn = X509_get_serialNumber(x); auto sn = X509_get_serialNumber(x);
auto bn = BN_new(); auto bn = BN_new();
auto bn_d = defer(BN_free, bn); auto bn_d = defer(BN_free, bn);
if (!ASN1_INTEGER_to_BN(sn, bn)) { if (!ASN1_INTEGER_to_BN(sn, bn) || BN_num_bytes(bn) > 20) {
return StringRef{}; return StringRef{};
} }