According to the versions of the nss packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.(CVE-2020-12399)
When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.(CVE-2020-12400)
A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from(CVE-2020-12403)
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.(CVE-2020-25648)
In Network Security Services before 3.44, a malformed Netscape Certificate Sequence can cause NSS to crash, resulting in a denial of service.(CVE-2019-17007)
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(143390);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/07");
script_cve_id(
"CVE-2019-17007",
"CVE-2020-12399",
"CVE-2020-12400",
"CVE-2020-12403",
"CVE-2020-25648"
);
script_name(english:"EulerOS 2.0 SP9 : nss (EulerOS-SA-2020-2500)");
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 nss packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerabilities :
- NSS has shown timing differences when performing DSA
signatures, which was exploitable and could eventually
leak private keys. This vulnerability affects
Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR <
68.9.(CVE-2020-12399)
- When converting coordinates from projective to affine,
the modular inversion was not performed in constant
time, resulting in a possible timing-based side channel
attack. This vulnerability affects Firefox < 80 and
Firefox for Android < 80.(CVE-2020-12400)
- A flaw was found in the way CHACHA20-POLY1305 was
implemented in NSS. When using multi-part Chacha20, it
could cause out-of-bounds reads. This issue was fixed
by explicitly disabling multi-part ChaCha20 (which was
not functioning correctly) and strictly enforcing tag
length. The highest threat from(CVE-2020-12403)
- A flaw was found in the way NSS handled CCS
(ChangeCipherSpec) messages in TLS 1.3. This flaw
allows a remote attacker to send multiple CCS messages,
causing a denial of service for servers compiled with
the NSS library. The highest threat from this
vulnerability is to system availability. This flaw
affects NSS versions before 3.58.(CVE-2020-25648)
- In Network Security Services before 3.44, a malformed
Netscape Certificate Sequence can cause NSS to crash,
resulting in a denial of service.(CVE-2019-17007)
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-2020-2500
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?21871782");
script_set_attribute(attribute:"solution", value:
"Update the affected nss packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/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:L/PR:N/UI:N/S:U/C:H/I:N/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-2020-12403");
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:"2020/12/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/01");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nss");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nss-softokn");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nss-util");
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) 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/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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(9)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP9");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP9", "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 = ["nss-3.40.1-11.h7.eulerosv2r9",
"nss-softokn-3.40.1-11.h7.eulerosv2r9",
"nss-util-3.40.1-11.h7.eulerosv2r9"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"9", 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, "nss");
}