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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.EULEROS_SA-2021-2091.NASL
HistoryJul 02, 2021 - 12:00 a.m.

EulerOS Virtualization for ARM 64 3.0.2.0 : openssl (EulerOS-SA-2021-2091)

2021-07-0200:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
25

7.8 High

AI Score

Confidence

High

According to the versions of the openssl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  • The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue.
    However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).(CVE-2021-23841)

  • Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue.
    Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y.
    Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).(CVE-2021-23840)

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.

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

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

if (description)
{
  script_id(151312);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/11");

  script_cve_id("CVE-2021-23840", "CVE-2021-23841");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : openssl (EulerOS-SA-2021-2091)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the openssl packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerabilities :

  - The OpenSSL public API function
    X509_issuer_and_serial_hash() attempts to create a
    unique hash value based on the issuer and serial number
    data contained within an X509 certificate. However it
    fails to correctly handle any errors that may occur
    while parsing the issuer field (which might occur if
    the issuer field is maliciously constructed). This may
    subsequently result in a NULL pointer deref and a crash
    leading to a potential denial of service attack. The
    function X509_issuer_and_serial_hash() is never
    directly called by OpenSSL itself so applications are
    only vulnerable if they use this function directly and
    they use it on certificates that may have been obtained
    from untrusted sources. OpenSSL versions 1.1.1i and
    below are affected by this issue. Users of these
    versions should upgrade to OpenSSL 1.1.1j. OpenSSL
    versions 1.0.2x and below are affected by this issue.
    However OpenSSL 1.0.2 is out of support and no longer
    receiving public updates. Premium support customers of
    OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users
    should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j
    (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y
    (Affected 1.0.2-1.0.2x).(CVE-2021-23841)

  - Calls to EVP_CipherUpdate, EVP_EncryptUpdate and
    EVP_DecryptUpdate may overflow the output length
    argument in some cases where the input length is close
    to the maximum permissable length for an integer on the
    platform. In such cases the return value from the
    function call will be 1 (indicating success), but the
    output length value will be negative. This could cause
    applications to behave incorrectly or crash. OpenSSL
    versions 1.1.1i and below are affected by this issue.
    Users of these versions should upgrade to OpenSSL
    1.1.1j. OpenSSL versions 1.0.2x and below are affected
    by this issue. However OpenSSL 1.0.2 is out of support
    and no longer receiving public updates. Premium support
    customers of OpenSSL 1.0.2 should upgrade to 1.0.2y.
    Other users should upgrade to 1.1.1j. Fixed in OpenSSL
    1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y
    (Affected 1.0.2-1.0.2x).(CVE-2021-23840)

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-2021-2091
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4c9ff97a");
  script_set_attribute(attribute:"solution", value:
"Update the affected openssl 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:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-23840");

  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:"2021/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0");
  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) 2021-2023 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/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");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["openssl-1.0.2k-16.h13",
        "openssl-devel-1.0.2k-16.h13",
        "openssl-libs-1.0.2k-16.h13"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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, "openssl");
}

7.8 High

AI Score

Confidence

High

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