EulerOS 2.0 SP11 : vim (EulerOS-SA-2024-1114)

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

include('compat.inc');

if (description)
{
  script_id(189686);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/26");

  script_cve_id(
    "CVE-2023-46246",
    "CVE-2023-48231",
    "CVE-2023-48233",
    "CVE-2023-48234",
    "CVE-2023-48235",
    "CVE-2023-48236",
    "CVE-2023-48237",
    "CVE-2023-48706"
  );

  script_name(english:"EulerOS 2.0 SP11 : vim (EulerOS-SA-2024-1114)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the vim packages installed, the EulerOS installation on the remote host is affected by the
following vulnerabilities :

  - 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. 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security
advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional
issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2024-1114
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?577121b7");
  script_set_attribute(attribute:"solution", value:
"Update the affected vim packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2023-48237");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-46246");

  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:"2023/10/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-enhanced");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-filesystem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:vim-minimal");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei 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");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(11)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP11", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "vim-common-9.0-1.h25.eulerosv2r11",
  "vim-enhanced-9.0-1.h25.eulerosv2r11",
  "vim-filesystem-9.0-1.h25.eulerosv2r11",
  "vim-minimal-9.0-1.h25.eulerosv2r11"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"11", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "vim");
}