CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:P/A:P
EPSS
Percentile
99.0%
The version of OpenSSL running on the remote host is affected by the following vulnerabilities :
A carefully crafted invalid TLS handshake could crash OpenSSL with a NULL pointer exception. A malicious server could use this flaw to crash a connecting client.
This issue only affected OpenSSL 1.0.1 versions.
(CVE-2013-4353)
A flaw in DTLS handling can cause an application using OpenSSL and DTLS to crash. This is not a vulnerability for OpenSSL prior to 1.0.0. OpenSSL is vulnerable to a denial of service, caused by the failure to properly maintain data structures for digest and encryption contexts by the DTLS retransmission implementation. A remote attacker could exploit this vulnerability to cause the daemon to crash. (CVE-2013-6450)
A flaw in OpenSSL can cause an application using OpenSSL to crash when using TLS version 1.2. This issue only affected OpenSSL 1.0.1 versions. OpenSSL is vulnerable to a denial of service, caused by an error in the ssl_get_algorithm2 function. A remote attacker could exploit this vulnerability using specially crafted traffic from a TLS 1.2 client to cause the daemon to crash. (CVE-2013-6449)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The text in the description was extracted from AIX Security
# Advisory openssl_advisory6.asc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(73564);
script_version("1.12");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/21");
script_cve_id("CVE-2013-4353", "CVE-2013-6449", "CVE-2013-6450");
script_bugtraq_id(64530, 64618, 64691);
script_name(english:"AIX OpenSSL Advisory : openssl_advisory6.asc");
script_summary(english:"Checks the version of the openssl packages");
script_set_attribute(attribute:"synopsis", value:"The remote AIX host is running a vulnerable version of OpenSSL.");
script_set_attribute(attribute:"description", value:
"The version of OpenSSL running on the remote host is affected by the
following vulnerabilities :
- A carefully crafted invalid TLS handshake could crash
OpenSSL with a NULL pointer exception. A malicious
server could use this flaw to crash a connecting client.
This issue only affected OpenSSL 1.0.1 versions.
(CVE-2013-4353)
- A flaw in DTLS handling can cause an application using
OpenSSL and DTLS to crash. This is not a vulnerability
for OpenSSL prior to 1.0.0. OpenSSL is vulnerable to a
denial of service, caused by the failure to properly
maintain data structures for digest and encryption
contexts by the DTLS retransmission implementation. A
remote attacker could exploit this vulnerability to
cause the daemon to crash. (CVE-2013-6450)
- A flaw in OpenSSL can cause an application using
OpenSSL to crash when using TLS version 1.2. This issue
only affected OpenSSL 1.0.1 versions. OpenSSL is
vulnerable to a denial of service, caused by an error in
the ssl_get_algorithm2 function. A remote attacker could
exploit this vulnerability using specially crafted
traffic from a TLS 1.2 client to cause the daemon to
crash. (CVE-2013-6449)");
script_set_attribute(attribute:"see_also", value:"https://aix.software.ibm.com/aix/efixes/security/openssl_advisory6.asc");
script_set_attribute(attribute:"see_also", value:"https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp");
script_set_attribute(attribute:"solution", value:
"A fix is available, and it can be downloaded from the AIX website.
To extract the fixes from the tar file :
zcat openssl-1.0.1.501.tar.Z | tar xvf -
IMPORTANT : If possible, it is recommended that a mksysb backup of
the system be created. Verify it is both bootable and readable
before proceeding.
To preview the fix installation :
installp -apYd . openssl
To install the fix package :
installp -aXYd . openssl");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/12/14");
script_set_attribute(attribute:"patch_publication_date", value:"2014/02/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/16");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"AIX Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/AIX/lslpp", "Host/local_checks_enabled", "Host/AIX/version");
exit(0);
}
include("aix.inc");
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
oslevel = get_kb_item_or_exit("Host/AIX/version");
if ( oslevel != "AIX-5.3" && oslevel != "AIX-6.1" && oslevel != "AIX-7.1" )
{
oslevel = ereg_replace(string:oslevel, pattern:"-", replace:" ");
audit(AUDIT_OS_NOT, "AIX 5.3 / 6.1 / 7.1", oslevel);
}
if ( ! get_kb_item("Host/AIX/lslpp") ) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (aix_check_package(release:"5.3", package:"openssl.base", minpackagever:"1.0.1.500", maxpackagever:"1.0.1.500", fixpackagever:"1.0.1.501") > 0) flag++;
if (aix_check_package(release:"6.1", package:"openssl.base", minpackagever:"1.0.1.500", maxpackagever:"1.0.1.500", fixpackagever:"1.0.1.501") > 0) flag++;
if (aix_check_package(release:"7.1", package:"openssl.base", minpackagever:"1.0.1.500", maxpackagever:"1.0.1.500", fixpackagever:"1.0.1.501") > 0) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : aix_report_get()
);
}
else
{
tested = aix_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssl.base");
}