Scientific Linux Security Update : openssl on SL7.x x86_64

This script is Copyright (C) 2016 Tenable Network Security, Inc.

Synopsis :

The remote Scientific Linux host is missing one or more security

Description :

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,

- 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)

See also :

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 91041 ()

Bugtraq ID:

CVE ID: CVE-2016-0799

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