7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%
An update for httpd is now available for Red Hat Enterprise Linux 7.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. 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.
The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.
Security Fix(es) :
It was discovered that the httpd’s mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server. (CVE-2017-9788)
It was discovered that the use of httpd’s ap_get_basic_auth_pw() API function outside of the authentication phase could lead to authentication bypass. A remote attacker could possibly use this flaw to bypass required authentication if the API was used incorrectly by one of the modules used by httpd. (CVE-2017-3167)
A NULL pointer dereference flaw was found in the httpd’s mod_ssl module. A remote attacker could use this flaw to cause an httpd child process to crash if another module used by httpd called a certain API function during the processing of an HTTPS request. (CVE-2017-3169)
A buffer over-read flaw was found in the httpd’s ap_find_token() function. A remote attacker could use this flaw to cause httpd child process to crash via a specially crafted HTTP request. (CVE-2017-7668)
A buffer over-read flaw was found in the httpd’s mod_mime module. A user permitted to modify httpd’s MIME configuration could use this flaw to cause httpd child process to crash. (CVE-2017-7679)
A use-after-free flaw was found in the way httpd handled invalid and previously unregistered HTTP methods specified in the Limit directive used in an .htaccess file. A remote attacker could possibly use this flaw to disclose portions of the server memory, or cause httpd child process to crash. (CVE-2017-9798)
Red Hat would like to thank Hanno Bock for reporting CVE-2017-9798.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2017:3193. The text
# itself is copyright (C) Red Hat, Inc.
#
include("compat.inc");
if (description)
{
script_id(104539);
script_version("3.10");
script_cvs_date("Date: 2019/10/24 15:35:43");
script_cve_id("CVE-2017-3167", "CVE-2017-3169", "CVE-2017-7668", "CVE-2017-7679", "CVE-2017-9788", "CVE-2017-9798");
script_xref(name:"RHSA", value:"2017:3193");
script_name(english:"RHEL 7 : httpd (RHSA-2017:3193) (Optionsbleed)");
script_summary(english:"Checks the rpm output for the updated packages");
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 httpd is now available for Red Hat Enterprise Linux 7.2
Extended Update Support.
Red Hat Product Security has rated this update as having a security
impact of Important. 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.
The httpd packages provide the Apache HTTP Server, a powerful,
efficient, and extensible web server.
Security Fix(es) :
* It was discovered that the httpd's mod_auth_digest module did not
properly initialize memory before using it when processing certain
headers related to digest authentication. A remote attacker could
possibly use this flaw to disclose potentially sensitive information
or cause httpd child process to crash by sending specially crafted
requests to a server. (CVE-2017-9788)
* It was discovered that the use of httpd's ap_get_basic_auth_pw() API
function outside of the authentication phase could lead to
authentication bypass. A remote attacker could possibly use this flaw
to bypass required authentication if the API was used incorrectly by
one of the modules used by httpd. (CVE-2017-3167)
* A NULL pointer dereference flaw was found in the httpd's mod_ssl
module. A remote attacker could use this flaw to cause an httpd child
process to crash if another module used by httpd called a certain API
function during the processing of an HTTPS request. (CVE-2017-3169)
* A buffer over-read flaw was found in the httpd's ap_find_token()
function. A remote attacker could use this flaw to cause httpd child
process to crash via a specially crafted HTTP request. (CVE-2017-7668)
* A buffer over-read flaw was found in the httpd's mod_mime module. A
user permitted to modify httpd's MIME configuration could use this
flaw to cause httpd child process to crash. (CVE-2017-7679)
* A use-after-free flaw was found in the way httpd handled invalid and
previously unregistered HTTP methods specified in the Limit directive
used in an .htaccess file. A remote attacker could possibly use this
flaw to disclose portions of the server memory, or cause httpd child
process to crash. (CVE-2017-9798)
Red Hat would like to thank Hanno Bock for reporting CVE-2017-9798."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2017:3193"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-3167"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-3169"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-7668"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-7679"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-9788"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2017-9798"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd-manual");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:mod_ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:mod_proxy_html");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:mod_session");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:mod_ssl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.2");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/06/20");
script_set_attribute(attribute:"patch_publication_date", value:"2017/11/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/14");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Red Hat Local Security Checks");
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\.2([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.2", "Red Hat " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "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-2017:3193";
yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
if (!empty_or_null(yum_report))
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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", sp:"2", cpu:"s390x", reference:"httpd-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"httpd-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"httpd-debuginfo-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"httpd-debuginfo-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"httpd-devel-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"httpd-devel-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", reference:"httpd-manual-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"httpd-tools-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"httpd-tools-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"mod_ldap-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"mod_ldap-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"mod_proxy_html-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"mod_proxy_html-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"mod_session-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"mod_session-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"s390x", reference:"mod_ssl-2.4.6-40.el7_2.6")) flag++;
if (rpm_check(release:"RHEL7", sp:"2", cpu:"x86_64", reference:"mod_ssl-2.4.6-40.el7_2.6")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, "httpd / httpd-debuginfo / httpd-devel / httpd-manual / httpd-tools / etc");
}
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | httpd | p-cpe:/a:redhat:enterprise_linux:httpd |
redhat | enterprise_linux | httpd-debuginfo | p-cpe:/a:redhat:enterprise_linux:httpd-debuginfo |
redhat | enterprise_linux | httpd-devel | p-cpe:/a:redhat:enterprise_linux:httpd-devel |
redhat | enterprise_linux | httpd-manual | p-cpe:/a:redhat:enterprise_linux:httpd-manual |
redhat | enterprise_linux | httpd-tools | p-cpe:/a:redhat:enterprise_linux:httpd-tools |
redhat | enterprise_linux | mod_ldap | p-cpe:/a:redhat:enterprise_linux:mod_ldap |
redhat | enterprise_linux | mod_proxy_html | p-cpe:/a:redhat:enterprise_linux:mod_proxy_html |
redhat | enterprise_linux | mod_session | p-cpe:/a:redhat:enterprise_linux:mod_session |
redhat | enterprise_linux | mod_ssl | p-cpe:/a:redhat:enterprise_linux:mod_ssl |
redhat | enterprise_linux | 7.2 | cpe:/o:redhat:enterprise_linux:7.2 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3167
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3169
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7668
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7679
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9788
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9798
access.redhat.com/errata/RHSA-2017:3193
access.redhat.com/security/cve/cve-2017-3167
access.redhat.com/security/cve/cve-2017-3169
access.redhat.com/security/cve/cve-2017-7668
access.redhat.com/security/cve/cve-2017-7679
access.redhat.com/security/cve/cve-2017-9788
access.redhat.com/security/cve/cve-2017-9798
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%