An update for openssl is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.
Security Fix(es) :
openssl: ROHNP - Key Extraction Side Channel in Multiple Crypto Libraries (CVE-2018-0495)
openssl: Malicious server can send large prime to client during DH(E) TLS handshake causing the client to hang (CVE-2018-0732)
openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service (CVE-2018-0739)
openssl: Malformed X.509 IPAdressFamily could cause OOB read (CVE-2017-3735)
openssl: RSA key generation cache timing vulnerability in crypto/rsa/ rsa_gen.c allows attackers to recover private keys (CVE-2018-0737)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes :
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2018:3221. The text
# itself is copyright (C) Red Hat, Inc.
#
include('compat.inc');
if (description)
{
script_id(118534);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/23");
script_cve_id(
"CVE-2017-3735",
"CVE-2018-0495",
"CVE-2018-0732",
"CVE-2018-0737",
"CVE-2018-0739"
);
script_xref(name:"RHSA", value:"2018:3221");
script_name(english:"RHEL 7 : openssl (RHSA-2018:3221)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"An update for openssl is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.
OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL)
and Transport Layer Security (TLS) protocols, as well as a
full-strength general-purpose cryptography library.
Security Fix(es) :
* openssl: ROHNP - Key Extraction Side Channel in Multiple Crypto
Libraries (CVE-2018-0495)
* openssl: Malicious server can send large prime to client during
DH(E) TLS handshake causing the client to hang (CVE-2018-0732)
* openssl: Handling of crafted recursive ASN.1 structures can cause a
stack overflow and resulting denial of service (CVE-2018-0739)
* openssl: Malformed X.509 IPAdressFamily could cause OOB read
(CVE-2017-3735)
* openssl: RSA key generation cache timing vulnerability in
crypto/rsa/ rsa_gen.c allows attackers to recover private keys
(CVE-2018-0737)
For more details about the security issue(s), including the impact, a
CVSS score, and other related information, refer to the CVE page(s)
listed in the References section.
Additional Changes :
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.6 Release Notes linked from the References section.");
# https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3395ff0b");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2018:3221");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2017-3735");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2018-0495");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2018-0732");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2018-0737");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2018-0739");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:H/PR:N/UI:N/S:U/C:H/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-2017-3735");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2018-0737");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/08/28");
script_set_attribute(attribute:"patch_publication_date", value:"2018/10/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/31");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-perl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssl-static");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo))
{
rhsa = "RHSA-2018:3221";
yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
if (!empty_or_null(yum_report))
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : yum_report
);
exit(0);
}
else
{
audit_message = "affected by Red Hat security advisory " + rhsa;
audit(AUDIT_OS_NOT, audit_message);
}
}
else
{
flag = 0;
if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssl-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssl-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", reference:"openssl-debuginfo-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", reference:"openssl-devel-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", reference:"openssl-libs-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssl-perl-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssl-perl-1.0.2k-16.el7")) flag++;
if (rpm_check(release:"RHEL7", reference:"openssl-static-1.0.2k-16.el7")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get() + redhat_report_package_caveat()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssl / openssl-debuginfo / openssl-devel / openssl-libs / etc");
}
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3735
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0495
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0732
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0737
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0739
www.nessus.org/u?3395ff0b
access.redhat.com/errata/RHSA-2018:3221
access.redhat.com/security/cve/cve-2017-3735
access.redhat.com/security/cve/cve-2018-0495
access.redhat.com/security/cve/cve-2018-0732
access.redhat.com/security/cve/cve-2018-0737
access.redhat.com/security/cve/cve-2018-0739