5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.8 Medium
AI Score
Confidence
Low
0.015 Low
EPSS
Percentile
87.1%
The version of OpenSSL installed on the remote host is prior to 1.1.1d. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.1.1d advisory.
In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). (CVE-2019-1563)
OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). (CVE-2019-1549)
Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead of using a named curve). In those cases it is possible that such a group does not have the cofactor present. This can occur even where all the parameters match a known named curve. If such a curve is used then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability to time the creation of a large number of signatures where explicit parameters with no co-factor present are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). (CVE-2019-1547)
OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as certificates used for verification in TLS. This directory is most commonly referred to as OPENSSLDIR, and is configurable with the --prefix / --openssldir configuration options. For OpenSSL versions 1.1.0 and 1.1.1, the mingw configuration targets assume that resulting programs and libraries are installed in a Unix-like environment and the default prefix for program installation as well as for OPENSSLDIR should be ‘/usr/local’. However, mingw programs are Windows programs, and as such, find themselves looking at sub- directories of ‘C:/usr/local’, which may be world writable, which enables untrusted users to modify OpenSSL’s default configuration, insert CA certificates, modify (or even replace) existing engine modules, etc. For OpenSSL 1.0.2, ‘/usr/local/ssl’ is used as default for OPENSSLDIR on all Unix and Windows targets, including Visual C builds. However, some build instructions for the diverse Windows targets on 1.0.2 encourage you to specify your own --prefix. OpenSSL versions 1.1.1, 1.1.0 and 1.0.2 are affected by this issue. Due to the limited scope of affected deployments this has been assessed as low severity and therefore we are not creating new releases at this time. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).
Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
(CVE-2019-1552)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(128116);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/07");
script_cve_id(
"CVE-2019-1547",
"CVE-2019-1549",
"CVE-2019-1552",
"CVE-2019-1563"
);
script_xref(name:"IAVA", value:"2019-A-0303-S");
script_name(english:"OpenSSL 1.1.1 < 1.1.1d Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"The remote service is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of OpenSSL installed on the remote host is prior to 1.1.1d. It is, therefore, affected by multiple
vulnerabilities as referenced in the 1.1.1d advisory.
- In situations where an attacker receives automated notification of the success or failure of a decryption
attempt an attacker, after sending a very large number of messages to be decrypted, can recover a
CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the
public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a
certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the
correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL
1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). (CVE-2019-1563)
- OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include
protection in the event of a fork() system call in order to ensure that the parent and child processes did
not share the same RNG state. However this protection was not being used in the default case. A partial
mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so
the likelihood of a parent and child process sharing state is significantly reduced. If an application
already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur
at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). (CVE-2019-1549)
- Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant
code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead
of using a named curve). In those cases it is possible that such a group does not have the cofactor
present. This can occur even where all the parameters match a known named curve. If such a curve is used
then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery
during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability
to time the creation of a large number of signatures where explicit parameters with no co-factor present
are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because
explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL
1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s). (CVE-2019-1547)
- OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as
certificates used for verification in TLS. This directory is most commonly referred to as OPENSSLDIR, and
is configurable with the --prefix / --openssldir configuration options. For OpenSSL versions 1.1.0 and
1.1.1, the mingw configuration targets assume that resulting programs and libraries are installed in a
Unix-like environment and the default prefix for program installation as well as for OPENSSLDIR should be
'/usr/local'. However, mingw programs are Windows programs, and as such, find themselves looking at sub-
directories of 'C:/usr/local', which may be world writable, which enables untrusted users to modify
OpenSSL's default configuration, insert CA certificates, modify (or even replace) existing engine modules,
etc. For OpenSSL 1.0.2, '/usr/local/ssl' is used as default for OPENSSLDIR on all Unix and Windows
targets, including Visual C builds. However, some build instructions for the diverse Windows targets on
1.0.2 encourage you to specify your own --prefix. OpenSSL versions 1.1.1, 1.1.0 and 1.0.2 are affected by
this issue. Due to the limited scope of affected deployments this has been assessed as low severity and
therefore we are not creating new releases at this time. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).
Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
(CVE-2019-1552)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2a8e1f29");
# https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=54aa9d51b09d67e90db443f682cface795f5af9e
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7572df8d");
# https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=08229ad838c50f644d7e928e2eef147b4308ad64
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b878099f");
# https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=30c22fa8b1d840036b8e203585738df62a03cec8
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d6f7882a");
script_set_attribute(attribute:"see_also", value:"https://www.cve.org/CVERecord?id=CVE-2019-1547");
script_set_attribute(attribute:"see_also", value:"https://www.cve.org/CVERecord?id=CVE-2019-1549");
script_set_attribute(attribute:"see_also", value:"https://www.cve.org/CVERecord?id=CVE-2019-1552");
script_set_attribute(attribute:"see_also", value:"https://www.cve.org/CVERecord?id=CVE-2019-1563");
script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20190910.txt");
script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20190730.txt");
script_set_attribute(attribute:"solution", value:
"Upgrade to OpenSSL version 1.1.1d or later.");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1549");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/30");
script_set_attribute(attribute:"patch_publication_date", value:"2019/07/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/23");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/a:openssl:openssl");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("openssl_version.nasl", "openssl_nix_installed.nbin", "openssl_win_installed.nbin");
script_require_keys("installed_sw/OpenSSL");
exit(0);
}
include('vcf.inc');
include('vcf_extras_openssl.inc');
var app_info = vcf::combined_get_app_info(app:'OpenSSL');
vcf::check_all_backporting(app_info:app_info);
var constraints = [
{ 'min_version' : '1.1.1', 'fixed_version' : '1.1.1d' }
];
vcf::openssl::check_version_and_report(
app_info:app_info,
constraints:constraints,
severity:SECURITY_WARNING
);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1547
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1549
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1552
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1563
www.nessus.org/u?2a8e1f29
www.nessus.org/u?7572df8d
www.nessus.org/u?b878099f
www.nessus.org/u?d6f7882a
www.cve.org/CVERecord?id=CVE-2019-1547
www.cve.org/CVERecord?id=CVE-2019-1549
www.cve.org/CVERecord?id=CVE-2019-1552
www.cve.org/CVERecord?id=CVE-2019-1563
www.openssl.org/news/secadv/20190730.txt
www.openssl.org/news/secadv/20190910.txt
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.8 Medium
AI Score
Confidence
Low
0.015 Low
EPSS
Percentile
87.1%