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体验新版 GitCode,发现更多精彩内容 >>
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6ac83779
编写于
5月 03, 2016
作者:
M
Matt Caswell
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Update CHANGES and NEWS for the new release
Reviewed-by:
N
Richard Levitte
<
levitte@openssl.org
>
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CHANGES
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@@ -995,6 +995,103 @@
...
@@ -995,6 +995,103 @@
validated when establishing a connection.
validated when establishing a connection.
[Rob Percival <robpercival@google.com>]
[Rob Percival <robpercival@google.com>]
Changes between 1.0.2g and 1.0.2h [3 May 2016]
*) Prevent padding oracle in AES-NI CBC MAC check
A MITM attacker can use a padding oracle attack to decrypt traffic
when the connection uses an AES CBC cipher and the server support
AES-NI.
This issue was introduced as part of the fix for Lucky 13 padding
attack (CVE-2013-0169). The padding check was rewritten to be in
constant time by making sure that always the same bytes are read and
compared against either the MAC or padding bytes. But it no longer
checked that there was enough data to have both the MAC and padding
bytes.
This issue was reported by Juraj Somorovsky using TLS-Attacker.
(CVE-2016-2107)
[Kurt Roeckx]
*) Fix EVP_EncodeUpdate overflow
An overflow can occur in the EVP_EncodeUpdate() function which is used for
Base64 encoding of binary data. If an attacker is able to supply very large
amounts of input data then a length check can overflow resulting in a heap
corruption.
Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by
the PEM_write_bio* family of functions. These are mainly used within the
OpenSSL command line applications, so any application which processes data
from an untrusted source and outputs it as a PEM file should be considered
vulnerable to this issue. User applications that call these APIs directly
with large amounts of untrusted data may also be vulnerable.
This issue was reported by Guido Vranken.
(CVE-2016-2105)
[Matt Caswell]
*) Fix EVP_EncryptUpdate overflow
An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
is able to supply very large amounts of input data after a previous call to
EVP_EncryptUpdate() with a partial block then a length check can overflow
resulting in a heap corruption. Following an analysis of all OpenSSL
internal usage of the EVP_EncryptUpdate() function all usage is one of two
forms. The first form is where the EVP_EncryptUpdate() call is known to be
the first called function after an EVP_EncryptInit(), and therefore that
specific call must be safe. The second form is where the length passed to
EVP_EncryptUpdate() can be seen from the code to be some small value and
therefore there is no possibility of an overflow. Since all instances are
one of these two forms, it is believed that there can be no overflows in
internal code due to this problem. It should be noted that
EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
of these calls have also been analysed too and it is believed there are no
instances in internal usage where an overflow could occur.
This issue was reported by Guido Vranken.
(CVE-2016-2106)
[Matt Caswell]
*) Prevent ASN.1 BIO excessive memory allocation
When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
a short invalid encoding can casuse allocation of large amounts of memory
potentially consuming excessive resources or exhausting memory.
Any application parsing untrusted data through d2i BIO functions is
affected. The memory based functions such as d2i_X509() are *not* affected.
Since the memory based functions are used by the TLS library, TLS
applications are not affected.
This issue was reported by Brian Carpenter.
(CVE-2016-2109)
[Stephen Henson]
*) EBCDIC overread
ASN1 Strings that are over 1024 bytes can cause an overread in applications
using the X509_NAME_oneline() function on EBCDIC systems. This could result
in arbitrary stack data being returned in the buffer.
This issue was reported by Guido Vranken.
(CVE-2016-2176)
[Matt Caswell]
*) Modify behavior of ALPN to invoke callback after SNI/servername
callback, such that updates to the SSL_CTX affect ALPN.
[Todd Short]
*) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
default.
[Kurt Roeckx]
*) Only remove the SSLv2 methods with the no-ssl2-method option. When the
methods are enabled and ssl2 is disabled the methods return NULL.
[Kurt Roeckx]
Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
* Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
* Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
...
...
NEWS
浏览文件 @
6ac83779
...
@@ -5,7 +5,7 @@
...
@@ -5,7 +5,7 @@
This file gives a brief overview of the major changes between each OpenSSL
This file gives a brief overview of the major changes between each OpenSSL
release. For more details please read the CHANGES file.
release. For more details please read the CHANGES file.
Major changes between OpenSSL 1.0.2
g
and OpenSSL 1.1.0 [in pre-release]
Major changes between OpenSSL 1.0.2
h
and OpenSSL 1.1.0 [in pre-release]
o "shared" builds are now the default when possible
o "shared" builds are now the default when possible
o Added support for "pipelining"
o Added support for "pipelining"
...
@@ -46,6 +46,19 @@
...
@@ -46,6 +46,19 @@
o Support for Certificate Transparency
o Support for Certificate Transparency
o HKDF support.
o HKDF support.
Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
o Prevent padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
o Fix EVP_EncodeUpdate overflow (CVE-2016-2105)
o Fix EVP_EncryptUpdate overflow (CVE-2016-2106)
o Prevent ASN.1 BIO excessive memory allocation (CVE-2016-2109)
o EBCDIC overread (CVE-2016-2176)
o Modify behavior of ALPN to invoke callback after SNI/servername
callback, such that updates to the SSL_CTX affect ALPN.
o Remove LOW from the DEFAULT cipher list. This removes singles DES from
the default.
o Only remove the SSLv2 methods with the no-ssl2-method option.
Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
...
...
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