openssl - security update

Several vulnerabilities were discovered in OpenSSL, a Secure Socket Layer
toolkit.

• CVE-2016-2105
  Guido Vranken discovered that an overflow can occur in the function
  EVP_EncodeUpdate(), used for Base64 encoding, if an attacker can
  supply a large amount of data. This could lead to a heap corruption.
• CVE-2016-2106
  Guido Vranken discovered that an overflow can occur in the function
  EVP_EncryptUpdate() if an attacker can supply a large amount of data.
  This could lead to a heap corruption.
• CVE-2016-2107
  Juraj Somorovsky discovered a padding oracle in the AES CBC cipher
  implementation based on the AES-NI instruction set. This could allow
  an attacker to decrypt TLS traffic encrypted with one of the cipher
  suites based on AES CBC.
• CVE-2016-2108
  David Benjamin from Google discovered that two separate bugs in the
  ASN.1 encoder, related to handling of negative zero integer values
  and large universal tags, could lead to an out-of-bounds write.
• CVE-2016-2109
  Brian Carpenter discovered that 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.
• CVE-2016-2176
  Guido Vranken discovered that ASN.1 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.

Additional information about these issues can be found in the OpenSSL
security advisory at <https://www.openssl.org/news/secadv/20160503.txt&gt;

For Debian 7 Wheezy, these issues have been fixed in openssl version 1.0.1e-2+deb7u21