This warning breaks the build in 1.0.0 and 0.9.8
Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit b1ffc6ca1c387efad0772c16dfe426afef45dc4f)
By using non-DER or invalid encodings outside the signed portion of a
certificate the fingerprint can be changed without breaking the signature.
Although no details of the signed portion of the certificate can be changed
this can cause problems with some applications: e.g. those using the
certificate fingerprint for blacklists.
1. Reject signatures with non zero unused bits.
If the BIT STRING containing the signature has non zero unused bits reject
the signature. All current signature algorithms require zero unused bits.
2. Check certificate algorithm consistency.
Check the AlgorithmIdentifier inside TBS matches the one in the
certificate signature. NB: this will result in signature failure
errors for some broken certificates.
3. Check DSA/ECDSA signatures use DER.
Reencode DSA/ECDSA signatures and compare with the original received
signature. Return an error if there is a mismatch.
This will reject various cases including garbage after signature
(thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
(negative or with leading zeroes).
CVE-2014-8275
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 684400ce192dac51df3d3e92b61830a6ef90be3e)
Conflicts:
CHANGES
crypto/dsa/dsa_asn1.c
According to X6.90 null, object identifier, boolean, integer and enumerated
types can only have primitive encodings: return an error if any of
these are received with a constructed encoding.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit f5e4b6b5b566320a8d774f9475540f7d0e6a704d)
Conflicts:
crypto/asn1/asn1_err.c
Causes more problems than it fixes: even though error codes
are not part of the stable API, several users rely on the
specific error code, and the change breaks them. Conversely,
we don't have any concrete use-cases for constant-time behaviour here.
This reverts commit b55ff319f880adc874b8c95957adf2003117d42b.
Reviewed-by: Andy Polyakov <appro@openssl.org>
used with no explanation. Some of this was introduced as part of RT#1929. The
value 28 is the length of the IP header (20 bytes) plus the UDP header (8
bytes). However use of this constant is incorrect because there may be
instances where a different value is needed, e.g. an IPv4 header is 20 bytes
but an IPv6 header is 40. Similarly you may not be using UDP (e.g. SCTP).
This commit introduces a new BIO_CTRL that provides the value to be used for
this mtu "overhead". It will be used by subsequent commits.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 0d3ae34df573f477b6b1aaf614d52dcdfcff5fce)
Conflicts:
crypto/bio/bio.h
crypto/bio/bss_dgram.c
If the hash or public key algorithm is "undef" the signature type
will receive special handling and shouldn't be included in the
cross reference table.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 55f7fb8848b6e4bec291724a479e1580d6f407d6)
Conflicts:
crypto/objects/obj_xref.h
algorithms MD2 and RC5 don't get built.
Also, disable building the test apps in crypto/des and crypto/pkcs7, as
they have no support at all.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Conflicts:
crypto/crypto-lib.com
makevms.com
ssl/ssl-lib.com
Patch supplied by Matthieu Patou <mat@matws.net>, and modified to also
remove duplicate definition of PKCS7_type_is_digest.
PR#3551
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit e0fdea3e49e7454aa76bd5ecf3a3747641354c68)
Reencode DigestInto in DER and check against the original: this
will reject any improperly encoded DigestInfo structures.
Note: this is a precautionary measure, there is no known attack
which can exploit this.
Thanks to Brian Smith for reporting this issue.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Accidentally omitted from commit 455b65dfab0de51c9f67b3c909311770f2b3f801
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit fdc35a9d3e8cf4cfd9330d5df9883f42cf5648ad)
Do the final padding check in EVP_DecryptFinal_ex in constant time to
avoid a timing leak from padding failure.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4aac102f75b517bdb56b1bcfd0a856052d559f6e)
Conflicts:
crypto/evp/evp_enc.c
(cherry picked from commit 738911cde68b2b3706e502cf8daf5b14738f2f42)
Conflicts:
crypto/evp/evp_enc.c
(Original commit adb46dbc6dd7347750df2468c93e8c34bcb93a4b)
Use the new constant-time methods consistently in s3_srvr.c
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 455b65dfab0de51c9f67b3c909311770f2b3f801)
Conflicts:
ssl/Makefile
Also tweak s3_cbc.c to use new constant-time methods.
Also fix memory leaks from internal errors in RSA_padding_check_PKCS1_OAEP_mgf1
This patch is based on the original RT submission by Adam Langley <agl@chromium.org>,
as well as code from BoringSSL and OpenSSL.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Conflicts:
crypto/rsa/rsa_oaep.c
