RHEL 6 : vim (Unpatched Vulnerability)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory vim. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(196324);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/11");

  script_cve_id(
    "CVE-2017-5953",
    "CVE-2017-6350",
    "CVE-2017-11109",
    "CVE-2017-17087",
    "CVE-2017-1000382",
    "CVE-2019-20807",
    "CVE-2021-3236",
    "CVE-2021-3778",
    "CVE-2021-3796",
    "CVE-2021-3872",
    "CVE-2021-3903",
    "CVE-2021-3927",
    "CVE-2021-3974",
    "CVE-2021-3984",
    "CVE-2021-4019",
    "CVE-2021-4069",
    "CVE-2021-4166",
    "CVE-2021-4192",
    "CVE-2021-4193",
    "CVE-2022-0351",
    "CVE-2022-0359",
    "CVE-2022-1154",
    "CVE-2022-1619",
    "CVE-2022-1621",
    "CVE-2022-1629",
    "CVE-2022-1720",
    "CVE-2022-2124",
    "CVE-2022-2125",
    "CVE-2022-2126",
    "CVE-2022-2129",
    "CVE-2022-2175",
    "CVE-2022-2182",
    "CVE-2022-2183",
    "CVE-2022-2206",
    "CVE-2022-2207",
    "CVE-2022-2208",
    "CVE-2022-2210",
    "CVE-2022-2231",
    "CVE-2022-2284",
    "CVE-2022-2285",
    "CVE-2022-2286",
    "CVE-2022-2287",
    "CVE-2022-2288",
    "CVE-2022-2289",
    "CVE-2022-2343",
    "CVE-2022-2344",
    "CVE-2022-2345",
    "CVE-2022-2571",
    "CVE-2022-2580",
    "CVE-2022-2581",
    "CVE-2022-2598",
    "CVE-2022-2816",
    "CVE-2022-2817",
    "CVE-2022-2819",
    "CVE-2022-2849",
    "CVE-2022-2862",
    "CVE-2022-2874",
    "CVE-2022-2889",
    "CVE-2022-2923",
    "CVE-2022-2946",
    "CVE-2022-2980",
    "CVE-2022-3037",
    "CVE-2022-3153",
    "CVE-2022-3234",
    "CVE-2022-3235",
    "CVE-2022-3256",
    "CVE-2022-3296",
    "CVE-2022-3352",
    "CVE-2022-3520",
    "CVE-2022-3591",
    "CVE-2022-4292",
    "CVE-2023-0049",
    "CVE-2023-0051",
    "CVE-2023-0054",
    "CVE-2023-0433",
    "CVE-2023-0512",
    "CVE-2023-1127",
    "CVE-2023-1170",
    "CVE-2023-1175",
    "CVE-2023-1264",
    "CVE-2023-2609",
    "CVE-2023-2610",
    "CVE-2023-5344",
    "CVE-2023-5441",
    "CVE-2023-46246",
    "CVE-2023-48231",
    "CVE-2023-48232",
    "CVE-2023-48233",
    "CVE-2023-48234",
    "CVE-2023-48235",
    "CVE-2023-48236",
    "CVE-2023-48237",
    "CVE-2023-48706",
    "CVE-2024-22667"
  );

  script_name(english:"RHEL 6 : vim (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - vim: Integer overflow at an unserialize_uep memory allocation site (CVE-2017-6350)

  - vim: Heap-based Buffer Overflow (CVE-2022-3520)

  - VIM version 8.0.1187 (and other versions most likely) ignores umask when creating a swap file
    ([ORIGINAL_FILENAME].swp) resulting in files that may be world readable or otherwise accessible in ways
    not intended by the user running the vi binary. (CVE-2017-1000382)

  - Vim 8.0 allows attackers to cause a denial of service (invalid free) or possibly have unspecified other
    impact via a crafted source (aka -S) file. NOTE: there might be a limited number of scenarios in which
    this has security relevance. (CVE-2017-11109)

  - fileio.c in Vim prior to 8.0.1263 sets the group ownership of a .swp file to the editor's primary group
    (which may be different from the group ownership of the original file), which allows local users to obtain
    sensitive information by leveraging an applicable group membership, as demonstrated by /etc/shadow owned
    by root:shadow mode 0640, but /etc/.shadow.swp owned by root:users mode 0640, a different vulnerability
    than CVE-2017-1000382. (CVE-2017-17087)

  - vim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file,
    which may result in an integer overflow at a memory allocation site and a resultant buffer overflow.
    (CVE-2017-5953)

  - In Vim before 8.1.0881, users can circumvent the rvim restricted mode and execute arbitrary OS commands
    via scripting interfaces (e.g., Python, Ruby, or Lua). (CVE-2019-20807)

  - vim 8.2.2348 is affected by null pointer dereference, allows local attackers to cause a denial of service
    (DoS) via the ex_buffer_all method. (CVE-2021-3236)

  - vim is vulnerable to Heap-based Buffer Overflow (CVE-2021-3778, CVE-2021-3872, CVE-2021-3903,
    CVE-2021-3927, CVE-2021-3984, CVE-2021-4019)

  - vim is vulnerable to Use After Free (CVE-2021-3796, CVE-2021-3974, CVE-2021-4069, CVE-2021-4192)

  - vim is vulnerable to Out-of-bounds Read (CVE-2021-4166, CVE-2021-4193)

  - Access of Memory Location Before Start of Buffer in GitHub repository vim/vim prior to 8.2.
    (CVE-2022-0351)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2. (CVE-2022-0359, CVE-2022-2125,
    CVE-2022-2182, CVE-2022-2207)

  - Use after free in utf_ptr2char in GitHub repository vim/vim prior to 8.2.4646. (CVE-2022-1154)

  - Heap-based Buffer Overflow in function cmdline_erase_chars in GitHub repository vim/vim prior to 8.2.4899.
    This vulnerabilities are capable of crashing software, modify memory, and possible remote execution
    (CVE-2022-1619)

  - Heap buffer overflow in vim_strncpy find_word in GitHub repository vim/vim prior to 8.2.4919. This
    vulnerability is capable of crashing software, Bypass Protection Mechanism, Modify Memory, and possible
    remote execution (CVE-2022-1621)

  - Buffer Over-read in function find_next_quote in GitHub repository vim/vim prior to 8.2.4925. This
    vulnerabilities are capable of crashing software, Modify Memory, and possible remote execution
    (CVE-2022-1629)

  - Buffer Over-read in function grab_file_name in GitHub repository vim/vim prior to 8.2.4956. This
    vulnerability is capable of crashing the software, memory modification, and possible remote execution.
    (CVE-2022-1720)

  - Buffer Over-read in GitHub repository vim/vim prior to 8.2. (CVE-2022-2124, CVE-2022-2175)

  - Out-of-bounds Read in GitHub repository vim/vim prior to 8.2. (CVE-2022-2126, CVE-2022-2183,
    CVE-2022-2206)

  - Out-of-bounds Write in GitHub repository vim/vim prior to 8.2. (CVE-2022-2129, CVE-2022-2210)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2.5163. (CVE-2022-2208)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2. (CVE-2022-2231)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0. (CVE-2022-2284)

  - Integer Overflow or Wraparound in GitHub repository vim/vim prior to 9.0. (CVE-2022-2285)

  - Out-of-bounds Read in GitHub repository vim/vim prior to 9.0. (CVE-2022-2286, CVE-2022-2287)

  - Out-of-bounds Write in GitHub repository vim/vim prior to 9.0. (CVE-2022-2288)

  - Use After Free in GitHub repository vim/vim prior to 9.0. (CVE-2022-2289)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0044. (CVE-2022-2343)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0045. (CVE-2022-2344)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0046. (CVE-2022-2345)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0101. (CVE-2022-2571)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0102. (CVE-2022-2580)

  - Out-of-bounds Read in GitHub repository vim/vim prior to 9.0.0104. (CVE-2022-2581)

  - Out-of-bounds Write to API in GitHub repository vim/vim prior to 9.0.0100. (CVE-2022-2598)

  - Out-of-bounds Read in GitHub repository vim/vim prior to 9.0.0212. (CVE-2022-2816)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0213. (CVE-2022-2817)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0211. (CVE-2022-2819)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0220. (CVE-2022-2849)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0221. (CVE-2022-2862)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0224. (CVE-2022-2874)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0225. (CVE-2022-2889)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0240. (CVE-2022-2923)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0246. (CVE-2022-2946)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0259. (CVE-2022-2980)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0322. (CVE-2022-3037)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0404. (CVE-2022-3153)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0483. (CVE-2022-3234)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0490. (CVE-2022-3235)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0530. (CVE-2022-3256)

  - Stack-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0577. (CVE-2022-3296)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0614. (CVE-2022-3352)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0789. (CVE-2022-3591)

  - Use After Free in GitHub repository vim/vim prior to 9.0.0882. (CVE-2022-4292)

  - Out-of-bounds Read in GitHub repository vim/vim prior to 9.0.1143. (CVE-2023-0049)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1144. (CVE-2023-0051)

  - Out-of-bounds Write in GitHub repository vim/vim prior to 9.0.1145. (CVE-2023-0054)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1225. (CVE-2023-0433)

  - Divide By Zero in GitHub repository vim/vim prior to 9.0.1247. (CVE-2023-0512)

  - Divide By Zero in GitHub repository vim/vim prior to 9.0.1367. (CVE-2023-1127)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1376. (CVE-2023-1170)

  - Incorrect Calculation of Buffer Size in GitHub repository vim/vim prior to 9.0.1378. (CVE-2023-1175)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.1392. (CVE-2023-1264)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.1531. (CVE-2023-2609)

  - Integer Overflow or Wraparound in GitHub repository vim/vim prior to 9.0.1532. (CVE-2023-2610)

  - Vim is an improved version of the good old UNIX editor Vi. Heap-use-after-free in memory allocated in the
    function `ga_grow_inner` in in the file `src/alloc.c` at line 748, which is freed in the file
    `src/ex_docmd.c` in the function `do_cmdline` at line 1010 and then used again in `src/cmdhist.c` at line
    759. When using the `:history` command, it's possible that the provided argument overflows the accepted
    value. Causing an Integer Overflow and potentially later an use-after-free. This vulnerability has been
    patched in version 9.0.2068. (CVE-2023-46246)

  - Vim is an open source command line text editor. When closing a window, vim may try to access already freed
    window structure. Exploitation beyond crashing the application has not been shown to be viable. This issue
    has been addressed in commit `25aabc2b` which has been included in release version 9.0.2106. Users are
    advised to upgrade. There are no known workarounds for this vulnerability. (CVE-2023-48231)

  - Vim is an open source command line text editor. A floating point exception may occur when calculating the
    line offset for overlong lines and smooth scrolling is enabled and the cpo-settings include the 'n' flag.
    This may happen when a window border is present and when the wrapped line continues on the next physical
    line directly in the window border because the 'cpo' setting includes the 'n' flag. Only users with non-
    default settings are affected and the exception should only result in a crash. This issue has been
    addressed in commit `cb0b99f0` which has been included in release version 9.0.2107. Users are advised to
    upgrade. There are no known workarounds for this vulnerability. (CVE-2023-48232)

  - Vim is an open source command line text editor. If the count after the :s command is larger than what fits
    into a (signed) long variable, abort with e_value_too_large. Impact is low, user interaction is required
    and a crash may not even happen in all situations. This issue has been addressed in commit `ac6378773`
    which has been included in release version 9.0.2108. Users are advised to upgrade. There are no known
    workarounds for this vulnerability. (CVE-2023-48233)

  - Vim is an open source command line text editor. When getting the count for a normal mode z command, it may
    overflow for large counts given. Impact is low, user interaction is required and a crash may not even
    happen in all situations. This issue has been addressed in commit `58f9befca1` which has been included in
    release version 9.0.2109. Users are advised to upgrade. There are no known workarounds for this
    vulnerability. (CVE-2023-48234)

  - Vim is an open source command line text editor. When parsing relative ex addresses one may unintentionally
    cause an overflow. Ironically this happens in the existing overflow check, because the line number becomes
    negative and LONG_MAX - lnum will cause the overflow. Impact is low, user interaction is required and a
    crash may not even happen in all situations. This issue has been addressed in commit `060623e` which has
    been included in release version 9.0.2110. Users are advised to upgrade. There are no known workarounds
    for this vulnerability. (CVE-2023-48235)

  - Vim is an open source command line text editor. When using the z= command, the user may overflow the count
    with values larger than MAX_INT. Impact is low, user interaction is required and a crash may not even
    happen in all situations. This vulnerability has been addressed in commit `73b2d379` which has been
    included in release version 9.0.2111. Users are advised to upgrade. There are no known workarounds for
    this vulnerability. (CVE-2023-48236)

  - Vim is an open source command line text editor. In affected versions when shifting lines in operator
    pending mode and using a very large value, it may be possible to overflow the size of integer. Impact is
    low, user interaction is required and a crash may not even happen in all situations. This issue has been
    addressed in commit `6bf131888` which has been included in version 9.0.2112. Users are advised to upgrade.
    There are no known workarounds for this vulnerability. (CVE-2023-48237)

  - Vim is a UNIX editor that, prior to version 9.0.2121, has a heap-use-after-free vulnerability. When
    executing a `:s` command for the very first time and using a sub-replace-special atom inside the
    substitution part, it is possible that the recursive `:s` call causes free-ing of memory which may later
    then be accessed by the initial `:s` command. The user must intentionally execute the payload and the
    whole process is a bit tricky to do since it seems to work only reliably for the very first :s command. It
    may also cause a crash of Vim. Version 9.0.2121 contains a fix for this issue. (CVE-2023-48706)

  - Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1969. (CVE-2023-5344)

  - NULL Pointer Dereference in GitHub repository vim/vim prior to 20d161ace307e28690229b68584f2d84556f8960.
    (CVE-2023-5441)

  - Vim before 9.0.2142 has a stack-based buffer overflow because did_set_langmap in map.c calls sprintf to
    write to the error buffer that is passed down to the option callback functions. (CVE-2024-22667)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
  script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
  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: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-2017-6350");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-3520");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:vim");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

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

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'pkgs': [
      {'reference':'vim', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'vim'}
    ]
  }
];


var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
  foreach var pkg ( constraint_array['pkgs'] ) {
    var unpatched_pkg = NULL;
    var _release = NULL;
    var sp = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (unpatched_pkg &&
        _release &&
        (!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
        unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : unpatched_packages_report()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'vim');
}