Vulnerabilities > CVE-2016-9639 - Improper Access Control vulnerability in Saltstack Salt

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
saltstack
CWE-284
nessus
NVD
Published: 2017-02-07
Updated: 2017-02-09

Summary

Salt before 2015.8.11 allows deleted minions to read or write to minions with the same id, related to caching.

Vulnerable Configurations

Part Description Count
Application
Saltstack
116

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

Nessus

NASL familySuSE Local Security Checks
NASL idOPENSUSE-2018-388.NASL
descriptionThis update for salt fixes the following issues : - [Regression] Permission problem: salt-ssh minion boostrap doesn
last seen2020-06-05
modified2018-04-24
plugin id109293
published2018-04-24
reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/109293
titleopenSUSE Security Update : salt (openSUSE-2018-388)
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2018-388.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(109293);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2016-9639", "CVE-2017-12791", "CVE-2017-14695", "CVE-2017-14696", "CVE-2017-5200");
  script_xref(name:"IAVB", value:"2017-B-0112-S");

  script_name(english:"openSUSE Security Update : salt (openSUSE-2018-388)");
  script_summary(english:"Check for the openSUSE-2018-388 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for salt fixes the following issues :

  - [Regression] Permission problem: salt-ssh minion
    boostrap doesn't work anymore. (bsc#1027722)

  - wrong use of os_family string for Suse in the locale
    module and others (bsc#1038855)

  - Cannot bootstrap a host using 'Manage system completely
    via SSH (will not install an agent)' (bsc#1002529)

  - add user to or replace members of group not working with
    SLES11 SPx (bsc#978150)

  - SLES-12-GA client fail to start salt minion (SUSE
    MANAGER 3.0) (bsc#991048)

  - salt pkg.latest raises exception if package is not
    availible (bsc#1012999)

  - pkg.list_products on 'registerrelease' and 'productline'
    returns boolean.False if empty (bsc#989193)

  - SLES-12-SP1 salt-minion clients has no Base Channel
    added by default (bsc#986019)

  - 'The system requires a reboot' does not disappear from
    web-UI despite the reboot (bsc#1017078)

  - Remove option -f from startproc (bsc#975733)

  - [PYTHON2] package salt-minion requires /usr/bin/python
    (bsc#1081592)

  - Upgrading packages on RHEL6/7 client fails (bsc#1068566)

  - /var/log/salt has insecure permissions (bsc#1071322)

  - [Minion-bootstrapping] Invalid char cause server
    (salt-master ERROR) (bsc#1011304)

  - CVE-2016-9639: Possible information leak due to revoked
    keys still being used (bsc#1012398)

  - Bootstrapping SLES12 minion invalid (bsc#1053376)

  - Minions not correctly onboarded if Proxy has multiple
    FQDNs (bsc#1063419)

  - salt --summary '*' <function> reporting '# of minions
    that did not return' wrongly (bsc#972311)

  - RH-L3 SALT - Stacktrace if nscd package is not present
    when using nscd state (bsc#1027044)

  - Inspector broken: no module 'query' or 'inspector' while
    querying or inspecting (bsc#989798)

  - [ Regression ]Centos7 Minion remote command execution
    from gui or cli , minion not responding (bsc#1027240)

  - SALT, minion_id generation doesn't match the newhostname
    (bsc#967803)

  - Salt API server shuts down when SSH call with no matches
    is issued (bsc#1004723)

  - /var/log/salt/minion fails logrotate (bsc#1030009)

  - Salt proxy test.ping crashes (bsc#975303)

  - salt master flood log with useless messages (bsc#985661)

  - After bootstrap salt client has deprecation warnings
    (bsc#1041993)

  - Head: salt 2017.7.2 starts salt-master as user root
    (bsc#1064520)

  - CVE-2017-12791: Maliciously crafted minion IDs can cause
    unwanted directory traversals on the Salt-master
    (bsc#1053955)

  - salt-2017.7.2 - broken %post script for salt-master
    (bsc#1079048)

  - Tearing down deployment with SaltStack Kubernetes module
    always shows error (bsc#1059291)

  - lvm.vg_present does not recognize PV with certain LVM
    filter settings. (bsc#988506)

  - High state fails: No service execution module loaded:
    check support for service (bsc#1065792)

  - When multiple versions of a package are installed on a
    minion, patch status may vary (bsc#972490)

  - Salt cp.push does not work on SUMA 3.2 Builds because of
    python3.4 (bsc#1075950)

  - timezone modue does not update /etc/sysconfig/clock
    (bsc#1008933)

  - Add patches to salt to support SUSE Manager scalability
    features (bsc#1052264)

  - salt-minion failed to start on minimal RHEL6 because of
    DBus exception during load of snapper module
    (bsc#993039)

  - Permission denied: '/var/run/salt-master.pid'
    (bsc#1050003)

  - Jobs scheduled to run at a future time stay pending for
    Salt minions (bsc#1036125)

  - Backport kubernetes-modules to salt (bsc#1051948)

  - After highstate: The minion function caused an exception
    (bsc#1068446)

  - VUL-0: CVE-2017-14695: salt: directory traversal
    vulnerability in minion id validation (bsc#1062462)

  - unable to update salt-minion on RHEL (bsc#1022841)

  - Nodes run out of memory due to salt-minion process
    (bsc#983512)

  - [Proxy] 'Broken pipe' during bootstrap of salt minion
    (bsc#1039370)

  - incorrect return code from /etc/rc.d/salt-minion
    (bsc#999852)

  - CVE-2017-5200: Salt-ssh via api let's run arbitrary
    commands as user salt (bsc#1011800)

  - beacons.conf on salt-minion not processed (bsc#1060230)

  - SLES11 SP3 salt-minion Client Cannot Select Base Channel
    (bsc#975093)

  - salt-ssh sys.doc gives authentication failure without
    arguments (bsc#1019386)

  - minion bootstrapping: error when bootstrap SLE11 clients
    (bsc#990439)

  - Certificate Deployment Fails for SLES11 SP3 Clients
    (bsc#975757)

  - state.module run() does not translate varargs
    (bsc#1025896)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1002529"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1004723"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1008933"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1011304"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1011800"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1012398"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1012999"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1017078"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1019386"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1022841"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1025896"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027044"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027240"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027722"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1030009"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1036125"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1038855"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039370"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1041993"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1050003"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1051948"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1052264"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1053376"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1053955"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1059291"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1060230"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1062462"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1063419"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1064520"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1065792"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1068446"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1068566"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1071322"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1075950"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1079048"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1081592"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=967803"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=972311"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=972490"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=975093"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=975303"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=975733"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=975757"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=978150"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=983512"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=985661"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=986019"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=988506"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=989193"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=989798"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=990439"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=991048"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=993039"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=999852"
  );
  # https://features.opensuse.org/320559
  script_set_attribute(
    attribute:"see_also",
    value:"https://features.opensuse.org/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected salt packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python2-salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python3-salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-bash-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-cloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-fish-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-master");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-minion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-syndic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-zsh-completion");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/24");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 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/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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, "openSUSE");
if (release !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.3", reference:"python2-salt-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"python3-salt-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-api-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-bash-completion-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-cloud-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-fish-completion-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-master-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-minion-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-proxy-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-ssh-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-syndic-2018.3.0-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"salt-zsh-completion-2018.3.0-17.1") ) 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, "python2-salt / python3-salt / salt / salt-api / etc");
}

References