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
8 High
AI Score
Confidence
Low
0.007 Low
EPSS
Percentile
80.6%
The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:1611 advisory.
In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the allow_active element rather than allow_any. (CVE-2019-3842)
systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082. (CVE-2020-13776)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Rocky Linux Security Advisory RLSA-2021:1611.
##
include('compat.inc');
if (description)
{
script_id(184771);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/22");
script_cve_id("CVE-2019-3842", "CVE-2020-13776");
script_xref(name:"RLSA", value:"2021:1611");
script_name(english:"Rocky Linux 8 : systemd (RLSA-2021:1611)");
script_set_attribute(attribute:"synopsis", value:
"The remote Rocky Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
RLSA-2021:1611 advisory.
- In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment
before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to
set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using
the allow_active element rather than allow_any. (CVE-2019-3842)
- systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed
by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were
intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082. (CVE-2020-13776)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://errata.rockylinux.org/RLSA-2021:1611");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1668521");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1740657");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1755287");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1764282");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1812972");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1819868");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1845534");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1862714");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1865840");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1868831");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1868877");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1870638");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1871139");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1880270");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1885553");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1887181");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1888912");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1889996");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:H/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:L/AC:H/PR:L/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-2020-13776");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-3842");
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:"2019/04/09");
script_set_attribute(attribute:"patch_publication_date", value:"2021/05/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-container");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-container-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-journal-remote");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-journal-remote-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-pam");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-pam-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-tests");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-tests-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-udev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:systemd-udev-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:rocky:linux:8");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Rocky Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 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/RockyLinux/release", "Host/RockyLinux/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RockyLinux/release');
if (isnull(os_release) || 'Rocky Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_ver = pregmatch(pattern: "Rocky(?: Linux)? release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Rocky Linux 8.x', 'Rocky Linux ' + os_ver);
if (!get_kb_item('Host/RockyLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Rocky Linux', cpu);
var pkgs = [
{'reference':'systemd-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-debuginfo-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-container-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debuginfo-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debugsource-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debugsource-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-debugsource-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-devel-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-devel-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-devel-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-journal-remote-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-journal-remote-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-journal-remote-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-journal-remote-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-debuginfo-239-45.el8', 'cpu':'i686', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-libs-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-pam-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-pam-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-pam-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-pam-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-tests-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-tests-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-tests-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-tests-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-udev-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-udev-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-udev-debuginfo-239-45.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'systemd-udev-debuginfo-239-45.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'Rocky-' + 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['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
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_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'systemd / systemd-container / systemd-container-debuginfo / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
rocky | linux | systemd | p-cpe:/a:rocky:linux:systemd |
rocky | linux | systemd-container | p-cpe:/a:rocky:linux:systemd-container |
rocky | linux | systemd-container-debuginfo | p-cpe:/a:rocky:linux:systemd-container-debuginfo |
rocky | linux | systemd-debuginfo | p-cpe:/a:rocky:linux:systemd-debuginfo |
rocky | linux | systemd-debugsource | p-cpe:/a:rocky:linux:systemd-debugsource |
rocky | linux | systemd-devel | p-cpe:/a:rocky:linux:systemd-devel |
rocky | linux | systemd-journal-remote | p-cpe:/a:rocky:linux:systemd-journal-remote |
rocky | linux | systemd-journal-remote-debuginfo | p-cpe:/a:rocky:linux:systemd-journal-remote-debuginfo |
rocky | linux | systemd-libs | p-cpe:/a:rocky:linux:systemd-libs |
rocky | linux | systemd-libs-debuginfo | p-cpe:/a:rocky:linux:systemd-libs-debuginfo |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3842
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13776
bugzilla.redhat.com/show_bug.cgi?id=1668521
bugzilla.redhat.com/show_bug.cgi?id=1740657
bugzilla.redhat.com/show_bug.cgi?id=1755287
bugzilla.redhat.com/show_bug.cgi?id=1764282
bugzilla.redhat.com/show_bug.cgi?id=1812972
bugzilla.redhat.com/show_bug.cgi?id=1819868
bugzilla.redhat.com/show_bug.cgi?id=1845534
bugzilla.redhat.com/show_bug.cgi?id=1862714
bugzilla.redhat.com/show_bug.cgi?id=1865840
bugzilla.redhat.com/show_bug.cgi?id=1868831
bugzilla.redhat.com/show_bug.cgi?id=1868877
bugzilla.redhat.com/show_bug.cgi?id=1870638
bugzilla.redhat.com/show_bug.cgi?id=1871139
bugzilla.redhat.com/show_bug.cgi?id=1880270
bugzilla.redhat.com/show_bug.cgi?id=1885553
bugzilla.redhat.com/show_bug.cgi?id=1887181
bugzilla.redhat.com/show_bug.cgi?id=1888912
bugzilla.redhat.com/show_bug.cgi?id=1889996
errata.rockylinux.org/RLSA-2021:1611
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
8 High
AI Score
Confidence
Low
0.007 Low
EPSS
Percentile
80.6%