According to the versions of the perl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :
Perl before 5.30.3 has an integer overflow related to mishandling of a ‘PL_regkind[OP(n)] == NOTHING’ situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.(CVE-2020-10878)
Perl before 5.30.3 on 33-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.(CVE-2020-10543)
regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.(CVE-2020-12723)
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(142579);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/09");
script_cve_id("CVE-2020-10543", "CVE-2020-10878", "CVE-2020-12723");
script_xref(name:"CEA-ID", value:"CEA-2021-0004");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_name(english:"EulerOS Virtualization 3.0.6.6 : perl (EulerOS-SA-2020-2459)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the perl packages installed, the EulerOS
Virtualization installation on the remote host is affected by the
following vulnerabilities :
- Perl before 5.30.3 has an integer overflow related to
mishandling of a 'PL_regkind[OP(n)] == NOTHING'
situation. A crafted regular expression could lead to
malformed bytecode with a possibility of instruction
injection.(CVE-2020-10878)
- Perl before 5.30.3 on 33-bit platforms allows a
heap-based buffer overflow because nested regular
expression quantifiers have an integer
overflow.(CVE-2020-10543)
- regcomp.c in Perl before 5.30.3 allows a buffer
overflow via a crafted regular expression because of
recursive S_study_chunk calls.(CVE-2020-12723)
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-2020-2459
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?508f5d1c");
script_set_attribute(attribute:"solution", value:
"Update the affected perl 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:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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-2020-10878");
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:"2020/11/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl-macros");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.6.6");
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) 2020-2024 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 != "3.0.6.6") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.6.6");
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 = ["perl-5.16.3-292.h13.eulerosv2r7",
"perl-core-5.16.3-292.h13.eulerosv2r7",
"perl-devel-5.16.3-292.h13.eulerosv2r7",
"perl-libs-5.16.3-292.h13.eulerosv2r7",
"perl-macros-5.16.3-292.h13.eulerosv2r7"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", 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, "perl");
}