Synopsis:          Moderate: openssl security and bug fix update
Advisory ID:       SLSA-2015:0716-1
Issue Date:        2015-03-24
CVE Numbers:       CVE-2015-0209
                   CVE-2015-0286
                   CVE-2015-0287
                   CVE-2015-0289
                   CVE-2015-0292
                   CVE-2015-0293
                   CVE-2015-0288
--

An invalid pointer use flaw was found in OpenSSL's ASN1_TYPE_cmp()
function. A remote attacker could crash a TLS/SSL client or server using
OpenSSL via a specially crafted X.509 certificate when the attacker-
supplied certificate was verified by the application. (CVE-2015-0286)

An integer underflow flaw, leading to a buffer overflow, was found in the
way OpenSSL decoded malformed Base64-encoded inputs. An attacker able to
make an application using OpenSSL decode a specially crafted
Base64-encoded input (such as a PEM file) could use this flaw to cause the
application to crash. Note: this flaw is not exploitable via the TLS/SSL
protocol because the data being transferred is not Base64-encoded.
(CVE-2015-0292)

A denial of service flaw was found in the way OpenSSL handled SSLv2
handshake messages. A remote attacker could use this flaw to cause a
TLS/SSL server using OpenSSL to exit on a failed assertion if it had both
the SSLv2 protocol and EXPORT-grade cipher suites enabled. (CVE-2015-0293)

A use-after-free flaw was found in the way OpenSSL imported malformed
Elliptic Curve private keys. A specially crafted key file could cause an
application using OpenSSL to crash when imported. (CVE-2015-0209)

An out-of-bounds write flaw was found in the way OpenSSL reused certain
ASN.1 structures. A remote attacker could possibly use a specially crafted
ASN.1 structure that, when parsed by an application, would cause that
application to crash. (CVE-2015-0287)

A NULL pointer dereference flaw was found in OpenSSL's X.509 certificate
handling implementation. A specially crafted X.509 certificate could cause
an application using OpenSSL to crash if the application attempted to
convert the certificate to a certificate request. (CVE-2015-0288)

A NULL pointer dereference was found in the way OpenSSL handled certain
PKCS#7 inputs. An attacker able to make an application using OpenSSL
verify, decrypt, or parse a specially crafted PKCS#7 input could cause
that application to crash. TLS/SSL clients and servers using OpenSSL were
not affected by this flaw. (CVE-2015-0289)

This update also fixes the following bug:

* When a wrapped Advanced Encryption Standard (AES) key did not require
any padding, it was incorrectly padded with 8 bytes, which could lead to
data corruption and interoperability problems. With this update, the
rounding algorithm in the RFC 5649 key wrapping implementation has been
fixed. As a result, the wrapped key conforms to the specification, which
prevents the described problems.

For the update to take effect, all services linked to the OpenSSL library
must be restarted, or the system rebooted.
--

SL7
  x86_64
    openssl-1.0.1e-42.el7_1.4.x86_64.rpm
    openssl-debuginfo-1.0.1e-42.el7_1.4.i686.rpm
    openssl-debuginfo-1.0.1e-42.el7_1.4.x86_64.rpm
    openssl-libs-1.0.1e-42.el7_1.4.i686.rpm
    openssl-libs-1.0.1e-42.el7_1.4.x86_64.rpm
    openssl-devel-1.0.1e-42.el7_1.4.i686.rpm
    openssl-devel-1.0.1e-42.el7_1.4.x86_64.rpm
    openssl-perl-1.0.1e-42.el7_1.4.x86_64.rpm
    openssl-static-1.0.1e-42.el7_1.4.i686.rpm
    openssl-static-1.0.1e-42.el7_1.4.x86_64.rpm

- Scientific Linux Development Team