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[SECURITY] [DLA 456-1] openssl security update

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Package : openssl

Version : 1.0.1e-2+deb7u21

CVE ID : CVE-2016-2105 CVE-2016-2106 CVE-2016-2107 CVE-2016-2108

CVE-2016-2109 CVE-2016-2176

 

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

 

 

 

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