Splunk Enterprise 9.0.0 < 9.0.8, 9.1.0 < 9.1.3 (SVD-2024-0109)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(194920);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/29");

  script_cve_id(
    "CVE-2022-40899",
    "CVE-2023-29402",
    "CVE-2023-29403",
    "CVE-2023-29404",
    "CVE-2023-29405",
    "CVE-2023-29406",
    "CVE-2023-29409",
    "CVE-2023-37920",
    "CVE-2023-39323"
  );

  script_name(english:"Splunk Enterprise 9.0.0 < 9.0.8, 9.1.0 < 9.1.3 (SVD-2024-0109)");

  script_set_attribute(attribute:"synopsis", value:
"An application running on a remote web server host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the SVD-2024-0109 advisory.

  - Line directives (//line) can be used to bypass the restrictions on //go:cgo_ directives, allowing
    blocked linker and compiler flags to be passed during compilation. This can result in unexpected execution
    of arbitrary code when running go build. The line directive requires the absolute path of the file in
    which the directive lives, which makes exploiting this issue significantly more complex. (CVE-2023-39323)

  - An issue discovered in Python Charmers Future 0.18.2 and earlier allows remote attackers to cause a denial
    of service via crafted Set-Cookie header from malicious web server. (CVE-2022-40899)

  - The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host
    header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send
    requests containing an invalid Request.Host or Request.URL.Host value. (CVE-2023-29406)

  - Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time
    verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <=
    8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in
    circulation with keys larger than this, and all three appear to be test certificates that are not actively
    deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so
    causing breakage here in the interests of increasing the default safety of users of crypto/tls seems
    reasonable. (CVE-2023-29409)

  - The go command may execute arbitrary code at build time when using cgo. This may occur when running go
    get on a malicious module, or when running any other command which builds untrusted code. This is can by
    triggered by linker flags, specified via a #cgo LDFLAGS directive. The arguments for a number of flags
    which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled
    through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers. (CVE-2023-29404)

  - The go command may execute arbitrary code at build time when using cgo. This may occur when running go
    get on a malicious module, or when running any other command which builds untrusted code. This is can by
    triggered by linker flags, specified via a #cgo LDFLAGS directive. Flags containing embedded spaces are
    mishandled, allowing disallowed flags to be smuggled through the LDFLAGS sanitization by including them in
    the argument of another flag. This only affects usage of the gccgo compiler. (CVE-2023-29405)

  - The go command may generate unexpected code at build time when using cgo. This may result in unexpected
    behavior when running a go program which uses cgo. This may occur when running an untrusted module which
    contains directories with newline characters in their names. Modules which are retrieved using the go
    command, i.e. via go get, are not affected (modules retrieved using GOPATH-mode, i.e. GO111MODULE=off,
    may be affected). (CVE-2023-29402)

  - On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid
    bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of
    standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors
    closed, opening any files can result in unexpected content being read or written with elevated privileges.
    Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents
    of its registers. (CVE-2023-29403)

  - Certifi is a curated collection of Root Certificates for validating the trustworthiness of SSL
    certificates while verifying the identity of TLS hosts. Certifi prior to version 2023.07.22 recognizes
    e-Tugra root certificates. e-Tugra's root certificates were subject to an investigation prompted by
    reporting of security issues in their systems. Certifi 2023.07.22 removes root certificates from e-Tugra
    from the root store. (CVE-2023-37920)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://advisory.splunk.com/advisories/SVD-2024-0109.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade Splunk Enterprise to version 9.0.8, 9.1.3, or higher.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-37920");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/01/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/02");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("splunkd_detect.nasl", "splunk_web_detect.nasl", "macos_splunk_installed.nbin", "splunk_win_installed.nbin", "splunk_nix_installed.nbin");
  script_require_keys("installed_sw/Splunk");

  exit(0);
}

include('vcf.inc');
include('vcf_extras_splunk.inc');

var app_info = vcf::splunk::get_app_info();

var constraints = [
  { 'min_version' : '9.0.0', 'fixed_version' : '9.0.8', 'license' : 'Enterprise' },
  { 'min_version' : '9.1.0', 'fixed_version' : '9.1.3', 'license' : 'Enterprise' }
];
vcf::splunk::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);