EulerOS 2.0 SP2 : pidgin (EulerOS-SA-2019-2387)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(131879);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/04");

  script_cve_id(
    "CVE-2016-2365",
    "CVE-2016-2366",
    "CVE-2016-2367",
    "CVE-2016-2368",
    "CVE-2016-2369",
    "CVE-2016-2370",
    "CVE-2016-2371",
    "CVE-2016-2373",
    "CVE-2016-2374",
    "CVE-2016-2375",
    "CVE-2016-2376",
    "CVE-2016-2377",
    "CVE-2016-2378",
    "CVE-2016-2380",
    "CVE-2016-4323"
  );

  script_name(english:"EulerOS 2.0 SP2 : pidgin (EulerOS-SA-2019-2387)");

  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 pidgin package installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - An information leak exists in the handling of the MXIT
    protocol in Pidgin. Specially crafted MXIT data sent
    via the server could potentially result in an
    out-of-bounds read. A malicious user, server, or
    man-in-the-middle can send an invalid size for an
    avatar which will trigger an out-of-bounds read
    vulnerability. This could result in a denial of service
    or copy data from memory to the file, resulting in an
    information leak if the avatar is sent to another
    user.(CVE-2016-2367)

  - A denial of service vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent from the server could
    potentially result in an out-of-bounds read. A
    malicious server or man-in-the-middle attacker can send
    invalid data to trigger this
    vulnerability.(CVE-2016-2370)

  - A denial of service vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could potentially
    result in a null pointer dereference. A malicious
    server or an attacker who intercepts the network
    traffic can send invalid data to trigger this
    vulnerability and cause a crash.(CVE-2016-2365)

  - A buffer overflow vulnerability exists in the handling
    of the MXIT protocol Pidgin. Specially crafted data
    sent via the server could potentially result in a
    buffer overflow, potentially resulting in memory
    corruption. A malicious server or an unfiltered
    malicious user can send negative length values to
    trigger this vulnerability.(CVE-2016-2378)

  - A denial of service vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could potentially
    result in an out-of-bounds read. A malicious server or
    an attacker who intercepts the network traffic can send
    invalid data to trigger this vulnerability and cause a
    crash.(CVE-2016-2366 )

  - Multiple memory corruption vulnerabilities exist in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could result in
    multiple buffer overflows, potentially resulting in
    code execution or memory disclosure.(CVE-2016-2368)

  - A NULL pointer dereference vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could potentially
    result in a denial of service vulnerability. A
    malicious server can send a packet starting with a NULL
    byte triggering the vulnerability.(CVE-2016-2369)

  - An out-of-bounds write vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could cause
    memory corruption resulting in code
    execution.(CVE-2016-2371)

  - A denial of service vulnerability exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT data sent via the server could potentially
    result in an out-of-bounds read. A malicious server or
    user can send an invalid mood to trigger this
    vulnerability.(CVE-2016-2373)

  - An exploitable memory corruption vulnerability exists
    in the handling of the MXIT protocol in Pidgin.
    Specially crafted MXIT MultiMX message sent via the
    server can result in an out-of-bounds write leading to
    memory disclosure and code execution.(CVE-2016-2374)

  - An exploitable out-of-bounds read exists in the
    handling of the MXIT protocol in Pidgin. Specially
    crafted MXIT contact information sent from the server
    can result in memory disclosure.(CVE-2016-2375)

  - A buffer overflow vulnerability exists in the handling
    of the MXIT protocol in Pidgin. Specially crafted MXIT
    data sent from the server could potentially result in
    arbitrary code execution. A malicious server or an
    attacker who intercepts the network traffic can send an
    invalid size for a packet which will trigger a buffer
    overflow.(CVE-2016-2376)

  - A buffer overflow vulnerability exists in the handling
    of the MXIT protocol in Pidgin. Specially crafted MXIT
    data sent by the server could potentially result in an
    out-of-bounds write of one byte. A malicious server can
    send a negative content-length in response to a HTTP
    request triggering the vulnerability.(CVE-2016-2377)

  - An information leak exists in the handling of the MXIT
    protocol in Pidgin. Specially crafted MXIT data sent to
    the server could potentially result in an out-of-bounds
    read. A user could be convinced to enter a particular
    string which would then get converted incorrectly and
    could lead to a potential out-of-bounds
    read.(CVE-2016-2380)

  - A directory traversal exists in the handling of the
    MXIT protocol in Pidgin. Specially crafted MXIT data
    sent from the server could potentially result in an
    overwrite of files. A malicious server or someone with
    access to the network traffic can provide an invalid
    filename for a splash image triggering the
    vulnerability.(CVE-2016-4323)

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-2019-2387
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?605161f0");
  script_set_attribute(attribute:"solution", value:
"Update the affected pidgin packages.");
  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:H/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-2016-2368");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2016-2378");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libpurple");
  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) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["libpurple-2.10.11-5.h3"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) flag++;

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