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Fix CRLF problem in BASE64 decode.

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This commit is contained in:
Lutz Jänicke 2002-04-15 09:55:40 +00:00
parent f916052eab
commit 2940a1298e
2 changed files with 15 additions and 0 deletions
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8
CHANGES
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@ -1625,6 +1625,14 @@ des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
Changes between 0.9.6c and 0.9.6d [XX xxx 2002]
*) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
an end-of-file condition would erronously be flagged, when the CRLF
was just at the end of a processed block. The bug was discovered when
processing data through a buffering memory BIO handing the data to a
BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
<ptsekov@syntrex.com> and Nedelcho Stanev.
[Lutz Jaenicke]
*) Implement a countermeasure against a vulnerability recently found
in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
before application data chunks to avoid the use of known IVs

7
crypto/evp/encode.c
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@ -277,6 +277,13 @@ int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
eof++;
}
if (v == B64_CR)
{
ln = 0;
if (exp_nl)
continue;
}
/* eoln */
if (v == B64_EOLN)
{