| Resumen: | 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;cause allocation of large amounts of memory potentially consuming;excessive resources or exhausting memory. |
| Descripción: | Summary:
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
cause allocation of large amounts of memory potentially consuming
excessive resources or exhausting memory.
Affected Software/OS:
openssl on Debian Linux
Solution:
For the stable distribution (jessie),
these problems have been fixed in version 1.0.1k-3+deb8u5.
For the unstable distribution (sid), these problems have been fixed in
version 1.0.2h-1.
We recommend that you upgrade your openssl packages.
CVSS Score:
10.0
CVSS Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C
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