SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) - Nessus

High Plugin ID: 106041

This page contains detailed information about the SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 106041
Name: SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1)
Filename: suse_SU-2018-0071-1.nasl
Vulnerability Published: 2018-01-31
This Plugin Published: 2018-01-15
Last Modification Time: 2021-01-13
Plugin Version: 1.9
Plugin Type: local
Plugin Family: SuSE Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list

Vulnerability Information

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for glibc fixes the following issues :

- A privilege escalation bug in the realpath() function has been fixed. [CVE-2018-1000001, bsc#1074293]

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 6:zypper in -t patch SUSE-OpenStack-Cloud-6-2018-56=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2018-56=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-56=1

To bring your system up-to-date, use 'zypper patch'.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) vulnerability:

Metasploit: exploit/linux/local/glibc_realpath_priv_esc
[glibc "realpath()" Privilege Escalation]
Metasploit: exploit/linux/local/glibc_realpath_priv_esc
[glibc 'realpath()' Privilege Escalation]
Exploit-DB: exploits/linux/local/44889.rb
[EDB-44889: glibc - 'realpath()' Privilege Escalation (Metasploit)]
GitHub: https://github.com/Al1ex/LinuxEelvation
[CVE-2018-1000001]
GitHub: https://github.com/BaseMax/AwesomeCompiler
[CVE-2018-1000001]
GitHub: https://github.com/De4dCr0w/Linux-kernel-EoP-exp
[CVE-2018-1000001]
GitHub: https://github.com/R0B1NL1N/Linux-Kernal-Exploits-m-
[CVE-2018-1000001]
GitHub: https://github.com/Snoopy-Sec/Localroot-ALL-CVE
[CVE-2018-1000001]
GitHub: https://github.com/anoaghost/Localroot_Compile
[CVE-2018-1000001]
GitHub: https://github.com/flyrev/security-scan-ci-presentation
[CVE-2018-1000001]
GitHub: https://github.com/qiantu88/Linux--exp
[CVE-2018-1000001]
GitHub: https://github.com/rakjong/LinuxElevation
[CVE-2018-1000001]
GitHub: https://github.com/usernameid0/tools-for-CVE-2018-1000001
[CVE-2018-1000001: Tools for get offsets and adding patch for support i386]
GitHub: https://github.com/0x00-0x00/CVE-2018-1000001
[CVE-2018-1000001: Glibc getcwd() local privilege escalation compiled binaries]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.0 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.0 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.2 (High)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:0071-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(106041);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/13");

  script_cve_id("CVE-2018-1000001");

  script_name(english:"SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"This update for glibc fixes the following issues :

  - A privilege escalation bug in the realpath() function
    has been fixed. [CVE-2018-1000001, bsc#1074293]

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1074293"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-1000001/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20180071-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?63b8d9bc"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 6:zypper in -t patch
SUSE-OpenStack-Cloud-6-2018-56=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch
SUSE-SLE-SAP-12-SP1-2018-56=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2018-56=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/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:"metasploit_name", value:'glibc "realpath()" Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-devel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-locale");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-locale-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-profile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nscd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nscd-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-debuginfo-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-debuginfo-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-debugsource-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-devel-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-devel-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-devel-debuginfo-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-devel-debuginfo-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-locale-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-locale-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-locale-debuginfo-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-locale-debuginfo-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-profile-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"glibc-profile-32bit-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"nscd-2.19-40.9.5")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"nscd-debuginfo-2.19-40.9.5")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "glibc");
}

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/suse_SU-2018-0071-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\suse_SU-2018-0071-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/suse_SU-2018-0071-1.nasl

Go back to menu.

How to Run

Here is how to run the SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select SuSE Local Security Checks plugin family.
On the right side table select SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) plugin ID 106041.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl suse_SU-2018-0071-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a suse_SU-2018-0071-1.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - suse_SU-2018-0071-1.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state suse_SU-2018-0071-1.nasl -t <IP/HOST>

Go back to menu.

References

See also:

Similar and related Nessus plugins:

109699 - Amazon Linux AMI : glibc (ALAS-2018-1017)
109371 - CentOS 7 : glibc (CESA-2018:0805)
106775 - EulerOS 2.0 SP1 : glibc (EulerOS-SA-2018-1047)
106776 - EulerOS 2.0 SP2 : glibc (EulerOS-SA-2018-1048)
117548 - EulerOS Virtualization 2.5.0 : glibc (EulerOS-SA-2018-1239)
125004 - EulerOS Virtualization 3.0.1.0 : glibc (EulerOS-SA-2019-1551)
106279 - Fedora 27 : glibc (2018-7714b514e2)
106281 - Fedora 26 : glibc (2018-8e27ad96ed)
108822 - GLSA-201804-02 : glibc: Multiple vulnerabilities
127183 - NewStart CGSL CORE 5.04 / MAIN 5.04 : glibc Multiple Vulnerabilities (NS-SA-2019-0024)
147282 - NewStart CGSL MAIN 6.02 : glibc Multiple Vulnerabilities (NS-SA-2021-0053)
106916 - openSUSE Security Update : glibc (openSUSE-2018-184)
106059 - openSUSE Security Update : glibc (openSUSE-2018-30)
109105 - Oracle Linux 7 : glibc (ELSA-2018-0805)
121812 - Photon OS 1.0: Glibc PHSA-2018-1.0-0111
111921 - Photon OS 1.0: Glibc PHSA-2018-1.0-0111 (deprecated)
121923 - Photon OS 2.0: Glibc PHSA-2018-2.0-0018
111288 - Photon OS 2.0 : glibc (PhotonOS-PHSA-2018-2.0-0018) (deprecated)
108985 - RHEL 7 : glibc (RHSA-2018:0805)
109447 - Scientific Linux Security Update : glibc on SL7.x x86_64 (20180410)
106044 - SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:0074-1)
106045 - SUSE SLES11 Security Update : glibc (SUSE-SU-2018:0075-1)
106046 - SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0076-1)
106865 - SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:0451-1)
107086 - SUSE SLES11 Security Update : glibc (SUSE-SU-2018:0565-1)
111547 - SUSE SLES12 Security Update : glibc (SUSE-SU-2018:2187-1)
106134 - Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : eglibc, glibc vulnerabilities (USN-3534-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file suse_SU-2018-0071-1.nasl version 1.9. For more plugins, visit the Nessus Plugin Library.

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SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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