EulerOS 2.0 SP5 : libarchive (EulerOS-SA-2019-1067)

2019-03-08T00:00:00
ID EULEROS_SA-2019-1067.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2019-03-08T00:00:00

Description

According to the versions of the libarchive package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  • libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415: Double Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c, parse_codes(), realloc(rar-i1/4zlzss.window, new_size) with new_size = 0 that can result in Crash/DoS. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.(CVE-2018-1000877)

  • libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.(CVE-2018-1000878)

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(122690);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/19");

  script_cve_id(
    "CVE-2018-1000877",
    "CVE-2018-1000878"
  );

  script_name(english:"EulerOS 2.0 SP5 : libarchive (EulerOS-SA-2019-1067)");
  script_summary(english:"Checks the rpm output for the updated packages.");

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

  - libarchive version commit
    416694915449219d505531b1096384f3237dd6cc onwards
    (release v3.1.0 onwards) contains a CWE-415: Double
    Free vulnerability in RAR decoder -
    libarchive/archive_read_support_format_rar.c,
    parse_codes(), realloc(rar-i1/4zlzss.window, new_size)
    with new_size = 0 that can result in Crash/DoS. This
    attack appear to be exploitable via the victim must
    open a specially crafted RAR archive.(CVE-2018-1000877)

  - libarchive version commit
    416694915449219d505531b1096384f3237dd6cc onwards
    (release v3.1.0 onwards) contains a CWE-416: Use After
    Free vulnerability in RAR decoder -
    libarchive/archive_read_support_format_rar.c that can
    result in Crash/DoS - it is unknown if RCE is possible.
    This attack appear to be exploitable via the victim
    must open a specially crafted RAR
    archive.(CVE-2018-1000878)

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-2019-1067
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?45cb250d");
  script_set_attribute(attribute:"solution", value:
"Update the affected libarchive packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libarchive");
  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) 2019-2020 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 !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);

flag = 0;

pkgs = ["libarchive-3.1.2-10.h1.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "libarchive");
}