CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
EPSS
Percentile
98.8%
Updated kdenetwork packages that fix three security issues are now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
The kdenetwork packages contain networking applications for the K Desktop Environment (KDE). Krfb Desktop Sharing, which is a part of the kdenetwork package, is a server application that allows session sharing between users. Krfb uses the LibVNCServer library.
A NULL pointer dereference flaw was found in the way LibVNCServer handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. (CVE-2014-6053)
A divide-by-zero flaw was found in the way LibVNCServer handled the scaling factor when it was set to ‘0’. A remote attacker could use this flaw to crash the VNC server using a malicious VNC client.
(CVE-2014-6054)
Two stack-based buffer overflow flaws were found in the way LibVNCServer handled file transfers. A remote attacker could use this flaw to crash the VNC server using a malicious VNC client.
(CVE-2014-6055)
Red Hat would like to thank oCERT for reporting these issues. oCERT acknowledges Nicolas Ruff as the original reporter.
Note: Prior to this update, the kdenetwork packages used an embedded copy of the LibVNCServer library. With this update, the kdenetwork packages have been modified to use the system LibVNCServer packages.
Therefore, the update provided by RHSA-2014:1826 must be installed to fully address the issues in krfb described above.
All kdenetwork users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. All running instances of the krfb server must be restarted for this update to take effect.
#%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-2014:1827. The text
# itself is copyright (C) Red Hat, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(79203);
script_version("1.17");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2014-6053", "CVE-2014-6054", "CVE-2014-6055");
script_xref(name:"RHSA", value:"2014:1827");
script_name(english:"RHEL 7 : kdenetwork (RHSA-2014:1827)");
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 kdenetwork packages that fix three security issues are now
available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.
The kdenetwork packages contain networking applications for the K
Desktop Environment (KDE). Krfb Desktop Sharing, which is a part of
the kdenetwork package, is a server application that allows session
sharing between users. Krfb uses the LibVNCServer library.
A NULL pointer dereference flaw was found in the way LibVNCServer
handled certain ClientCutText message. A remote attacker could use
this flaw to crash the VNC server by sending a specially crafted
ClientCutText message from a VNC client. (CVE-2014-6053)
A divide-by-zero flaw was found in the way LibVNCServer handled the
scaling factor when it was set to '0'. A remote attacker could use
this flaw to crash the VNC server using a malicious VNC client.
(CVE-2014-6054)
Two stack-based buffer overflow flaws were found in the way
LibVNCServer handled file transfers. A remote attacker could use this
flaw to crash the VNC server using a malicious VNC client.
(CVE-2014-6055)
Red Hat would like to thank oCERT for reporting these issues. oCERT
acknowledges Nicolas Ruff as the original reporter.
Note: Prior to this update, the kdenetwork packages used an embedded
copy of the LibVNCServer library. With this update, the kdenetwork
packages have been modified to use the system LibVNCServer packages.
Therefore, the update provided by RHSA-2014:1826 must be installed to
fully address the issues in krfb described above.
All kdenetwork users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. All running
instances of the krfb server must be restarted for this update to take
effect."
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2014:1827"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2014-6053"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2014-6054"
);
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/security/cve/cve-2014-6055"
);
# https://rhn.redhat.com/errata/RHSA-2014-1826.html
script_set_attribute(
attribute:"see_also",
value:"https://access.redhat.com/errata/RHSA-2014:1826"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/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:kdenetwork");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-fileshare-samba");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kdnssd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kget");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kget-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kopete");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kopete-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-kopete-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-krdc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-krdc-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-krdc-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-krfb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kdenetwork-krfb-libs");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
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:"2014/09/30");
script_set_attribute(attribute:"patch_publication_date", value:"2014/11/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/12");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 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-2014:1827";
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:"x86_64", reference:"kdenetwork-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", reference:"kdenetwork-common-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-debuginfo-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-debuginfo-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", reference:"kdenetwork-devel-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-fileshare-samba-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kdnssd-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kget-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-kget-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kget-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kopete-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-kopete-devel-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kopete-devel-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-kopete-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-kopete-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-krdc-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-krdc-devel-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-krdc-devel-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-krdc-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-krdc-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-krfb-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"i686", reference:"kdenetwork-krfb-libs-4.10.5-8.el7_0")) flag++;
if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kdenetwork-krfb-libs-4.10.5-8.el7_0")) 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, "kdenetwork / kdenetwork-common / kdenetwork-debuginfo / etc");
}
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | kdenetwork | p-cpe:/a:redhat:enterprise_linux:kdenetwork |
redhat | enterprise_linux | kdenetwork-common | p-cpe:/a:redhat:enterprise_linux:kdenetwork-common |
redhat | enterprise_linux | kdenetwork-debuginfo | p-cpe:/a:redhat:enterprise_linux:kdenetwork-debuginfo |
redhat | enterprise_linux | kdenetwork-devel | p-cpe:/a:redhat:enterprise_linux:kdenetwork-devel |
redhat | enterprise_linux | kdenetwork-fileshare-samba | p-cpe:/a:redhat:enterprise_linux:kdenetwork-fileshare-samba |
redhat | enterprise_linux | kdenetwork-kdnssd | p-cpe:/a:redhat:enterprise_linux:kdenetwork-kdnssd |
redhat | enterprise_linux | kdenetwork-kget | p-cpe:/a:redhat:enterprise_linux:kdenetwork-kget |
redhat | enterprise_linux | kdenetwork-kget-libs | p-cpe:/a:redhat:enterprise_linux:kdenetwork-kget-libs |
redhat | enterprise_linux | kdenetwork-kopete | p-cpe:/a:redhat:enterprise_linux:kdenetwork-kopete |
redhat | enterprise_linux | kdenetwork-kopete-devel | p-cpe:/a:redhat:enterprise_linux:kdenetwork-kopete-devel |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6053
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6054
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6055
access.redhat.com/errata/RHSA-2014:1826
access.redhat.com/errata/RHSA-2014:1827
access.redhat.com/security/cve/cve-2014-6053
access.redhat.com/security/cve/cve-2014-6054
access.redhat.com/security/cve/cve-2014-6055