[SECURITY] [DLA 637-1] openssl security update

Package : openssl
Version : 1.0.1t-1+deb7u1
CVE ID : CVE-2016-2177 CVE-2016-2178 CVE-2016-2179 CVE-2016-2180
CVE-2016-2181 CVE-2016-2182 CVE-2016-6302 CVE-2016-6303
CVE-2016-6304 CVE-2016-6306

Several vulnerabilities were discovered in OpenSSL:

CVE-2016-2177

Guido Vranken discovered that OpenSSL uses undefined pointer
arithmetic. Additional information can be found at
https://www.openssl.org/blog/blog/2016/06/27/undefined-pointer-arithmetic/

CVE-2016-2178

Cesar Pereida, Billy Brumley and Yuval Yarom discovered a timing
leak in the DSA code.

CVE-2016-2179 / CVE-2016-2181

Quan Luo and the OCAP audit team discovered denial of service
vulnerabilities in DTLS.

CVE-2016-2180 / CVE-2016-2182 / CVE-2016-6303

Shi Lei discovered an out-of-bounds memory read in
TS_OBJ_print_bio() and an out-of-bounds write in BN_bn2dec()
and MDC2_Update().

CVE-2016-2183

DES-based cipher suites are demoted from the HIGH group to MEDIUM
as a mitigation for the SWEET32 attack.

CVE-2016-6302

Shi Lei discovered that the use of SHA512 in TLS session tickets
is susceptible to denial of service.

CVE-2016-6304

Shi Lei discovered that excessively large OCSP status request may
result in denial of service via memory exhaustion.

CVE-2016-6306

Shi Lei discovered that missing message length validation when parsing
certificates may potentially result in denial of service.

For Debian 7 "Wheezy", these problems have been fixed in version
1.0.1t-1+deb7u1.

We recommend that you upgrade your openssl and libssl1.0.0 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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