Updated libxml2 packages that fix one security issue are now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
The libxml2 library is a development toolbox providing the implementation of various XML standards.
It was discovered that libxml2 loaded external parameter entities even when entity substitution was disabled. A remote attacker able to provide a specially crafted XML file to an application linked against libxml2 could use this flaw to conduct XML External Entity (XXE) attacks, possibly resulting in a denial of service or an information leak on the system. (CVE-2014-0191)
The CVE-2014-0191 issue was discovered by Daniel P. Berrange of Red Hat.
All libxml2 users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The desktop must be restarted (log out, then log back in) for this update to take effect.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2015:0749. The text
# itself is copyright (C) Red Hat, Inc.
#
include("compat.inc");
if (description)
{
script_id(82427);
script_version("1.12");
script_cvs_date("Date: 2019/10/24 15:35:39");
script_cve_id("CVE-2014-0191");
script_xref(name:"RHSA", value:"2015:0749");
script_name(english:"RHEL 7 : libxml2 (RHSA-2015:0749)");
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:
"Updated libxml2 packages that fix one security issue are now available
for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Moderate
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.
The libxml2 library is a development toolbox providing the
implementation of various XML standards.
It was discovered that libxml2 loaded external parameter entities even
when entity substitution was disabled. A remote attacker able to
provide a specially crafted XML file to an application linked against
libxml2 could use this flaw to conduct XML External Entity (XXE)
attacks, possibly resulting in a denial of service or an information
leak on the system. (CVE-2014-0191)
The CVE-2014-0191 issue was discovered by Daniel P. Berrange of Red
Hat.
All libxml2 users are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. The desktop
must be restarted (log out, then log back in) for this update to take
effect."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2015:0749"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2014-0191"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:"p-cpe:/a:redhat:enterprise_linux:libxml2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-python");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-static");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.1");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.2");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.3");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.7");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/21");
script_set_attribute(attribute:"patch_publication_date", value:"2015/03/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/30");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2019 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([^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-2015:0749";
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", reference:"libxml2-2.9.1-5.el7_1.2")) flag++;
if (rpm_check(release:"RHEL7", reference:"libxml2-debuginfo-2.9.1-5.el7_1.2")) flag++;
if (rpm_check(release:"RHEL7", reference:"libxml2-devel-2.9.1-5.el7_1.2")) flag++;
if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"libxml2-python-2.9.1-5.el7_1.2")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libxml2-python-2.9.1-5.el7_1.2")) flag++;
if (rpm_check(release:"RHEL7", reference:"libxml2-static-2.9.1-5.el7_1.2")) 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, "libxml2 / libxml2-debuginfo / libxml2-devel / libxml2-python / etc");
}
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | libxml2 | p-cpe:/a:redhat:enterprise_linux:libxml2 |
redhat | enterprise_linux | libxml2-debuginfo | p-cpe:/a:redhat:enterprise_linux:libxml2-debuginfo |
redhat | enterprise_linux | libxml2-devel | p-cpe:/a:redhat:enterprise_linux:libxml2-devel |
redhat | enterprise_linux | libxml2-python | p-cpe:/a:redhat:enterprise_linux:libxml2-python |
redhat | enterprise_linux | libxml2-static | p-cpe:/a:redhat:enterprise_linux:libxml2-static |
redhat | enterprise_linux | 7 | cpe:/o:redhat:enterprise_linux:7 |
redhat | enterprise_linux | 7.1 | cpe:/o:redhat:enterprise_linux:7.1 |
redhat | enterprise_linux | 7.2 | cpe:/o:redhat:enterprise_linux:7.2 |
redhat | enterprise_linux | 7.3 | cpe:/o:redhat:enterprise_linux:7.3 |
redhat | enterprise_linux | 7.4 | cpe:/o:redhat:enterprise_linux:7.4 |