10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.7%
The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4076 advisory.
When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
(CVE-2019-11719)
A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68. (CVE-2019-11727)
Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71. (CVE-2019-11756)
After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72. (CVE-2019-17023)
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)
During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80. (CVE-2020-12401)
During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes.
Note: An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78. (CVE-2020-12402)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2020-4076.
##
include('compat.inc');
if (description)
{
script_id(141312);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/16");
script_cve_id(
"CVE-2019-11719",
"CVE-2019-11727",
"CVE-2019-11756",
"CVE-2019-17006",
"CVE-2019-17023",
"CVE-2020-6829",
"CVE-2020-12400",
"CVE-2020-12401",
"CVE-2020-12402",
"CVE-2020-12403"
);
script_bugtraq_id(109085, 109086);
script_name(english:"Oracle Linux 7 : nss / and / nspr (ELSA-2020-4076)");
script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2020-4076 advisory.
- When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger
an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information
disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
(CVE-2019-11719)
- A vulnerability exists where it possible to force Network Security Services (NSS) to sign
CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in
CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This
vulnerability affects Firefox < 68. (CVE-2019-11727)
- Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited
to a denial of service). This vulnerability affects Firefox < 71. (CVE-2019-11756)
- After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting
in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming
Application Data records will be ignored. This vulnerability affects Firefox < 72. (CVE-2019-17023)
- 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)
- During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar
multiplication was removed, resulting in variable-time execution dependent on secret data. This
vulnerability affects Firefox < 80 and Firefox for Android < 80. (CVE-2020-12401)
- During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean
Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform
electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes.
*Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected,
but products built on top of it might. This vulnerability affects Firefox < 78. (CVE-2020-12402)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://linux.oracle.com/errata/ELSA-2020-4076.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
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:H/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-2019-17006");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/23");
script_set_attribute(attribute:"patch_publication_date", value:"2020/10/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nspr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nspr-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-pkcs11-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-softokn");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-softokn-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-softokn-freebl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-softokn-freebl-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-sysinit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-util");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss-util-devel");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");
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);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 7', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
pkgs = [
{'reference':'nspr-4.25.0-2.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nspr-4.25.0-2.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nspr-devel-4.25.0-2.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nspr-devel-4.25.0-2.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-3.53.1-3.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-3.53.1-3.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-devel-3.53.1-3.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-devel-3.53.1-3.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-pkcs11-devel-3.53.1-3.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-pkcs11-devel-3.53.1-3.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-softokn-3.53.1-6.0.1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-softokn-3.53.1-6.0.1.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-softokn-devel-3.53.1-6.0.1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-softokn-devel-3.53.1-6.0.1.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-softokn-freebl-3.53.1-6.0.1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-softokn-freebl-3.53.1-6.0.1.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-softokn-freebl-devel-3.53.1-6.0.1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-softokn-freebl-devel-3.53.1-6.0.1.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-sysinit-3.53.1-3.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-tools-3.53.1-3.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-util-3.53.1-1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-util-3.53.1-1.el7_9', 'cpu':'x86_64', 'release':'7'},
{'reference':'nss-util-devel-3.53.1-1.el7_9', 'cpu':'i686', 'release':'7'},
{'reference':'nss-util-devel-3.53.1-1.el7_9', 'cpu':'x86_64', 'release':'7'}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
sp = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
epoch = NULL;
allowmaj = NULL;
rpm_prefix = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['rpm_prefix'])) rpm_prefix = package_array['rpm_prefix'];
if (reference && release) {
if (rpm_prefix) {
if (rpm_exists(release:release, rpm:rpm_prefix) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
} else {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) 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, 'nspr / nspr-devel / nss / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
oracle | linux | 7 | cpe:/o:oracle:linux:7 |
oracle | linux | nspr | p-cpe:/a:oracle:linux:nspr |
oracle | linux | nspr-devel | p-cpe:/a:oracle:linux:nspr-devel |
oracle | linux | nss | p-cpe:/a:oracle:linux:nss |
oracle | linux | nss-devel | p-cpe:/a:oracle:linux:nss-devel |
oracle | linux | nss-pkcs11-devel | p-cpe:/a:oracle:linux:nss-pkcs11-devel |
oracle | linux | nss-softokn | p-cpe:/a:oracle:linux:nss-softokn |
oracle | linux | nss-softokn-devel | p-cpe:/a:oracle:linux:nss-softokn-devel |
oracle | linux | nss-softokn-freebl | p-cpe:/a:oracle:linux:nss-softokn-freebl |
oracle | linux | nss-softokn-freebl-devel | p-cpe:/a:oracle:linux:nss-softokn-freebl-devel |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11719
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11727
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11756
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17006
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17023
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12400
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12401
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12402
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12403
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6829
linux.oracle.com/errata/ELSA-2020-4076.html
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.7%