SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1) - Nessus
Critical Plugin ID: 144443This page contains detailed information about the SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 144443
Name: SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1)
Filename: suse_SU-2020-3865-1.nasl
Vulnerability Published: 2019-10-23
This Plugin Published: 2020-12-18
Last Modification Time: 2020-12-22
Plugin Version: 1.2
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
Severity: Critical
Vulnerability Published: 2019-10-23
Patch Published: 2020-12-17
CVE [?]: CVE-2019-18348, CVE-2019-20916, CVE-2020-8492, CVE-2020-27619
CPE [?]: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:libpython3_6m1_0, p-cpe:/a:novell:suse_linux:libpython3_6m1_0-debuginfo, p-cpe:/a:novell:suse_linux:python36, p-cpe:/a:novell:suse_linux:python36-base, p-cpe:/a:novell:suse_linux:python36-base-debuginfo, p-cpe:/a:novell:suse_linux:python36-debuginfo, p-cpe:/a:novell:suse_linux:python36-debugsource
Synopsis
The remote SUSE host is missing one or more security updates.
Description
This update for python36 fixes the following issues :
CVE-2019-18348: Fixed a CRLF injection via the host part of the url passed to urlopen() (bsc#1155094)
CVE-2019-20916: Fixed a directory traversal in _download_http_url() (bsc#1176262).
CVE-2020-27619: Fixed an issue where the CJK codec tests call eval() on content retrieved via HTTP (bsc#1178009).
CVE-2020-8492: Fixed a regular expression in urrlib that was prone to denial of service via HTTP (bsc#1162367).
Working-around missing python-packaging dependency in python-Sphinx is not necessary anymore (bsc#1174571).
Build of python3 documentation is not independent on the version of Sphinx(bsc#1179630).
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 the SUSE recommended installation methods like YaST online_update or 'zypper patch'.
Alternatively you can run the command listed for your product :
SUSE Linux Enterprise Server 12-SP5 :
zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-3865=1
Public Exploits
Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (GitHub)
Exploit Ease: Exploits (PoCs) are available
Here's the list of publicly known exploits and PoCs for verifying the SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1) vulnerability:
- GitHub: https://github.com/phonito/phonito-vulnerable-container
[CVE-2019-18348] - GitHub: https://github.com/noseka1/deep-dive-into-clair
[CVE-2019-20916] - GitHub: https://github.com/doyensec/regexploit
[CVE-2020-8492] - GitHub: https://github.com/engn33r/awesome-redos-security
[CVE-2020-8492] - GitHub: https://github.com/JamesGeee/CVE-2020-27619
[CVE-2020-27619: PoC for exploiting CVE-2020-27619]
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:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C
CVSS Base Score: | 7.5 (High) |
Impact Subscore: | 6.4 |
Exploitability Subscore: | 10.0 |
CVSS Temporal Score: | 5.5 (Medium) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 5.5 (Medium) |
CVSS Base Score: | 9.8 (Critical) |
Impact Subscore: | 5.9 |
Exploitability Subscore: | 3.9 |
CVSS Temporal Score: | 8.5 (High) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 8.5 (High) |
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Plugin Source
This is the suse_SU-2020-3865-1.nasl nessus plugin source code. This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:3865-1.
# The text itself is copyright (C) SUSE.
#
include("compat.inc");
if (description)
{
script_id(144443);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/12/22");
script_cve_id("CVE-2019-18348", "CVE-2019-20916", "CVE-2020-27619", "CVE-2020-8492");
script_name(english:"SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1)");
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 python36 fixes the following issues :
CVE-2019-18348: Fixed a CRLF injection via the host part of the url
passed to urlopen() (bsc#1155094)
CVE-2019-20916: Fixed a directory traversal in _download_http_url()
(bsc#1176262).
CVE-2020-27619: Fixed an issue where the CJK codec tests call eval()
on content retrieved via HTTP (bsc#1178009).
CVE-2020-8492: Fixed a regular expression in urrlib that was prone to
denial of service via HTTP (bsc#1162367).
Working-around missing python-packaging dependency in python-Sphinx is
not necessary anymore (bsc#1174571).
Build of python3 documentation is not independent on the version of
Sphinx(bsc#1179630).
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=1155094"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1162367"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1174571"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1176262"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1178009"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.suse.com/show_bug.cgi?id=1179630"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2019-18348/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2019-20916/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2020-27619/"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.suse.com/security/cve/CVE-2020-8492/"
);
# https://www.suse.com/support/update/announcement/2020/suse-su-20203865-1
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?6eeb8d39"
);
script_set_attribute(
attribute:"solution",
value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.
Alternatively you can run the command listed for your product :
SUSE Linux Enterprise Server 12-SP5 :
zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-3865=1"
);
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:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libpython3_6m1_0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libpython3_6m1_0-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python36");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python36-base");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python36-base-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python36-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python36-debugsource");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/23");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/18");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2020 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:"^(5)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP5", os_ver + " SP" + sp);
flag = 0;
if (rpm_check(release:"SLES12", sp:"5", reference:"libpython3_6m1_0-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"libpython3_6m1_0-debuginfo-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"python36-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"python36-base-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"python36-base-debuginfo-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"python36-debuginfo-3.6.12-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"python36-debugsource-3.6.12-4.25.1")) 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, "python36");
}
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-2020-3865-1.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\suse_SU-2020-3865-1.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/suse_SU-2020-3865-1.nasl
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How to Run
Here is how to run the SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1) 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 : python36 (SUSE-SU-2020:3865-1) plugin ID 144443.
- 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-2020-3865-1.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a suse_SU-2020-3865-1.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-2020-3865-1.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-2020-3865-1.nasl -t <IP/HOST>
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References
See also:
- https://www.tenable.com/plugins/nessus/144443
- https://bugzilla.suse.com/show_bug.cgi?id=1155094
- https://bugzilla.suse.com/show_bug.cgi?id=1162367
- https://bugzilla.suse.com/show_bug.cgi?id=1174571
- https://bugzilla.suse.com/show_bug.cgi?id=1176262
- https://bugzilla.suse.com/show_bug.cgi?id=1178009
- https://bugzilla.suse.com/show_bug.cgi?id=1179630
- https://www.suse.com/security/cve/CVE-2019-18348/
- https://www.suse.com/security/cve/CVE-2019-20916/
- https://www.suse.com/security/cve/CVE-2020-8492/
- https://www.suse.com/security/cve/CVE-2020-27619/
- http://www.nessus.org/u?6eeb8d39
- https://vulners.com/nessus/SUSE_SU-2020-3865-1.NASL
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Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file suse_SU-2020-3865-1.nasl version 1.2. For more plugins, visit the Nessus Plugin Library.
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