Amazon Linux AMI : openssl (ALAS-2015-498)

Medium Nessus Plugin ID 82047


The remote Amazon Linux AMI host is missing a security update.


A use-after-free flaw was found in the way OpenSSL importrf certain Elliptic Curve private keys. An attacker could use this flaw to crash OpenSSL, if a specially crafted certificate was imported.

A denial of service flaw was found in the way OpenSSL handled certain SSLv2 messages. A malicious client could send a specially crafted SSLv2 CLIENT-MASTER-KEY message that would cause an OpenSSL server that both supports SSLv2 and enables EXPORT-grade cipher suites to crash. (CVE-2015-0293)

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

A flaw was found in the the ASN (Abstract Syntax Notation) parsing code of OpenSSL. An attacker could present a specially crafted certificate, which when verified by an OpenSSL client or server could cause it to crash. (CVE-2015-0286)

A NULL pointer dereference was found in the way OpenSSL handled certain PKCS#7 blobs. An attacker could cause OpenSSL to crash, when applications verify, decrypt or parsed these ASN.1 encoded PKCS#7 blobs. OpenSSL clients and servers are not affected. (CVE-2015-0289)

A NULL pointer dereference flaw was found in OpenSSL's x509 certificate handling implementation. A remote attacker could use this flaw to crash an OpenSSL server using an invalid certificate key.


Run 'yum update openssl' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 82047

File Name: ala_ALAS-2015-498.nasl

Version: 1.7

Type: local

Agent: unix

Published: 2015/03/25

Updated: 2018/04/18

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:openssl, p-cpe:/a:amazon:linux:openssl-debuginfo, p-cpe:/a:amazon:linux:openssl-devel, p-cpe:/a:amazon:linux:openssl-perl, p-cpe:/a:amazon:linux:openssl-static, cpe:/o:amazon:linux

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 2015/03/23

Reference Information

CVE: CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288, CVE-2015-0289, CVE-2015-0293

ALAS: 2015-498