According to the version of the openssl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :
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(147668);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/10");
script_cve_id("CVE-2020-1971");
script_xref(name:"CEA-ID", value:"CEA-2021-0004");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_name(english:"EulerOS Virtualization 2.9.0 : openssl (EulerOS-SA-2021-1637)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing a security update.");
script_set_attribute(attribute:"description", value:
"According to the version of the openssl packages installed, the
EulerOS Virtualization installation on the remote host is affected by
the following vulnerability :
- The X.509 GeneralName type is a generic type for
representing different types of names. One of those
name types is known as EDIPartyName. OpenSSL provides a
function GENERAL_NAME_cmp which compares different
instances of a GENERAL_NAME to see if they are equal or
not. This function behaves incorrectly when both
GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer
dereference and a crash may occur leading to a possible
denial of service attack. OpenSSL itself uses the
GENERAL_NAME_cmp function for two purposes: 1)
Comparing CRL distribution point names between an
available CRL and a CRL distribution point embedded in
an X509 certificate 2) When verifying that a timestamp
response token signer matches the timestamp authority
name (exposed via the API functions
TS_RESP_verify_response and TS_RESP_verify_token) If an
attacker can control both items being compared then
that attacker could trigger a crash. For example if the
attacker can trick a client or server into checking a
malicious certificate against a malicious CRL then this
may occur. Note that some applications automatically
download CRLs based on a URL embedded in a certificate.
This checking happens prior to the signatures on the
certificate and CRL being verified. OpenSSL's s_server,
s_client and verify tools have support for the
'-crl_download' option which implements automatic CRL
downloading and this attack has been demonstrated to
work against those tools. Note that an unrelated bug
means that affected versions of OpenSSL cannot parse or
construct correct encodings of EDIPARTYNAME. However it
is possible to construct a malformed EDIPARTYNAME that
OpenSSL's parser will accept and hence trigger this
attack. All OpenSSL 1.1.1 and 1.0.2 versions are
affected by this issue. Other OpenSSL releases are out
of support and have not been checked. Fixed in OpenSSL
1.1.1i (Affected 1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x
(Affected 1.0.2-1.0.2w).(CVE-2020-1971)
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-2021-1637
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?62cef078");
script_set_attribute(attribute:"solution", value:
"Update the affected openssl package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:H/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1971");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"patch_publication_date", value:"2021/03/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/11");
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-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssl-perl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.9.0");
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) 2021-2024 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/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 != "2.9.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.9.0");
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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["openssl-1.1.1f-7.h10.eulerosv2r9",
"openssl-libs-1.1.1f-7.h10.eulerosv2r9",
"openssl-perl-1.1.1f-7.h10.eulerosv2r9"];
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");
}