Scientific Linux SL7: SLSA-2016:0722-1 Critical OpenSSL Security Update

Date: Mon, 9 May 2016 14:02:12 -0000
Reply-To: scientific-linux-users@
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Subject: Security ERRATA Important: openssl on SL7.x x86_64
MIME-Version: 1.0
Message-ID: <20160509140212.32020.19769@slpackages.fnal.gov>

Synopsis: Important: openssl security update
Advisory ID: SLSA-2016:0722-1
Issue Date: 2016-05-09
CVE Numbers: CVE-2016-0799
 CVE-2016-2842
 CVE-2016-2109
 CVE-2016-2108
 CVE-2016-2107
 CVE-2016-2105
 CVE-2016-2106
--

Security Fix(es):

* A flaw was found in the way OpenSSL encoded certain ASN.1 data
structures. An attacker could use this flaw to create a specially crafted
certificate which, when verified or re-encoded by OpenSSL, could cause it
to crash, or execute arbitrary code using the permissions of the user
running an application compiled against the OpenSSL library.
(CVE-2016-2108)

* Two integer overflow flaws, leading to buffer overflows, were found in
the way the EVP_EncodeUpdate() and EVP_EncryptUpdate() functions of
OpenSSL parsed very large amounts of input data. A remote attacker could
use these flaws to crash an application using OpenSSL or, possibly,
execute arbitrary code with the permissions of the user running that
application. (CVE-2016-2105, CVE-2016-2106)

* It was discovered that OpenSSL leaked timing information when decrypting
TLS/SSL and DTLS protocol encrypted records when the connection used the
AES CBC cipher suite and the server supported AES-NI. A remote attacker
could possibly use this flaw to retrieve plain text from encrypted packets
by using a TLS/SSL or DTLS server as a padding oracle. (CVE-2016-2107)

* Several flaws were found in the way BIO_*printf functions were
implemented in OpenSSL. Applications which passed large amounts of
untrusted data through these functions could crash or potentially execute
code with the permissions of the user running such an application.
(CVE-2016-0799, CVE-2016-2842)

* A denial of service flaw was found in the way OpenSSL parsed certain
ASN.1-encoded data from BIO (OpenSSL's I/O abstraction) inputs. An
application using OpenSSL that accepts untrusted ASN.1 BIO input could be
forced to allocate an excessive amount of data. (CVE-2016-2109)
--

SL7
 x86_64
 openssl-1.0.1e-51.el7_2.5.x86_64.rpm
 openssl-debuginfo-1.0.1e-51.el7_2.5.i686.rpm
 openssl-debuginfo-1.0.1e-51.el7_2.5.x86_64.rpm
 openssl-libs-1.0.1e-51.el7_2.5.i686.rpm
 openssl-libs-1.0.1e-51.el7_2.5.x86_64.rpm
 openssl-devel-1.0.1e-51.el7_2.5.i686.rpm
 openssl-devel-1.0.1e-51.el7_2.5.x86_64.rpm
 openssl-perl-1.0.1e-51.el7_2.5.x86_64.rpm
 openssl-static-1.0.1e-51.el7_2.5.i686.rpm
 openssl-static-1.0.1e-51.el7_2.5.x86_64.rpm

- Scientific Linux Development Team