An update for httpd is now available for Red Hat Enterprise Linux 7.
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) :
Note: After this update, httpd will no longer pass the value of the Proxy request header to scripts via the HTTP_PROXY environment variable.
Red Hat would like to thank Scott Geary (VendHQ) for reporting this issue.
Bug Fix(es) :
In a caching proxy configuration, the mod_cache module would treat content as stale if the Expires header changed when refreshing a cached response. As a consequence, an origin server returning content without a fixed Expires header would not be treated as cacheable. The mod_cache module has been fixed to ignore changes in the Expires header when refreshing content. As a result, such content is now cacheable, improving performance and reducing load at the origin server. (BZ#1347648)
The HTTP status code 451 ‘Unavailable For Legal Reasons’ was not usable in the httpd configuration. As a consequence, modules such as mod_rewrite could not be configured to return a 451 error if required for legal purposes. The 451 status code has been added to the list of available error codes, and modules can now be configured to return a 451 error if required. (BZ#1353269)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2016:1422 and
# CentOS Errata and Security Advisory 2016:1422 respectively.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(92379);
script_version("2.13");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2016-5387");
script_xref(name:"RHSA", value:"2016:1422");
script_name(english:"CentOS 7 : httpd (CESA-2016:1422) (httpoxy)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote CentOS 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.
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 httpd used the value of the Proxy header from
HTTP requests to initialize the HTTP_PROXY environment variable for
CGI scripts, which in turn was incorrectly used by certain HTTP client
implementations to configure the proxy for outgoing HTTP requests. A
remote attacker could possibly use this flaw to redirect HTTP requests
performed by a CGI script to an attacker-controlled proxy via a
malicious HTTP request. (CVE-2016-5387)
Note: After this update, httpd will no longer pass the value of the
Proxy request header to scripts via the HTTP_PROXY environment
variable.
Red Hat would like to thank Scott Geary (VendHQ) for reporting this
issue.
Bug Fix(es) :
* In a caching proxy configuration, the mod_cache module would treat
content as stale if the Expires header changed when refreshing a
cached response. As a consequence, an origin server returning content
without a fixed Expires header would not be treated as cacheable. The
mod_cache module has been fixed to ignore changes in the Expires
header when refreshing content. As a result, such content is now
cacheable, improving performance and reducing load at the origin
server. (BZ#1347648)
* The HTTP status code 451 'Unavailable For Legal Reasons' was not
usable in the httpd configuration. As a consequence, modules such as
mod_rewrite could not be configured to return a 451 error if required
for legal purposes. The 451 status code has been added to the list of
available error codes, and modules can now be configured to return a
451 error if required. (BZ#1353269)"
);
# https://lists.centos.org/pipermail/centos-announce/2016-July/021979.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?54025d4d"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected httpd packages."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
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:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-5387");
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:"p-cpe:/a:centos:centos:httpd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-manual");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:httpd-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_proxy_html");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_session");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:mod_ssl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/07/19");
script_set_attribute(attribute:"patch_publication_date", value:"2016/07/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/07/19");
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) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"CentOS Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"httpd-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"httpd-devel-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"httpd-manual-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"httpd-tools-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"mod_ldap-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"mod_proxy_html-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"mod_session-2.4.6-40.el7.centos.4")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"mod_ssl-2.4.6-40.el7.centos.4")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "httpd / httpd-devel / httpd-manual / httpd-tools / mod_ldap / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | httpd | p-cpe:/a:centos:centos:httpd |
centos | centos | httpd-devel | p-cpe:/a:centos:centos:httpd-devel |
centos | centos | httpd-manual | p-cpe:/a:centos:centos:httpd-manual |
centos | centos | httpd-tools | p-cpe:/a:centos:centos:httpd-tools |
centos | centos | mod_ldap | p-cpe:/a:centos:centos:mod_ldap |
centos | centos | mod_proxy_html | p-cpe:/a:centos:centos:mod_proxy_html |
centos | centos | mod_session | p-cpe:/a:centos:centos:mod_session |
centos | centos | mod_ssl | p-cpe:/a:centos:centos:mod_ssl |
centos | centos | 7 | cpe:/o:centos:centos:7 |