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

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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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