CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
Percentile
85.9%
The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1548-1 advisory.
GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user’s process (e.g., a system backup running as root). (CVE-2018-20482)
pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers. (CVE-2019-9923)
A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability. (CVE-2021-20193)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:1548-1. The text itself
# is copyright (C) SUSE.
##
include('compat.inc');
if (description)
{
script_id(160664);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/14");
script_cve_id("CVE-2018-20482", "CVE-2019-9923", "CVE-2021-20193");
script_xref(name:"SuSE", value:"SUSE-SU-2022:1548-1");
script_name(english:"SUSE SLED15 / SLES15 Security Update : tar (SUSE-SU-2022:1548-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by
multiple vulnerabilities as referenced in the SUSE-SU-2022:1548-1 advisory.
- GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows
local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by
modifying a file that is supposed to be archived by a different user's process (e.g., a system backup
running as root). (CVE-2018-20482)
- pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain
archives that have malformed extended headers. (CVE-2019-9923)
- A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a
crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this
vulnerability is to system availability. (CVE-2021-20193)
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://bugzilla.suse.com/1029961");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1120610");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1130496");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1181131");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-20482");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-9923");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-20193");
# https://lists.suse.com/pipermail/sle-security-updates/2022-May/010950.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?54b686a8");
script_set_attribute(attribute:"solution", value:
"Update the affected tar, tar-lang and / or tar-rmt packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/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-2019-9923");
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:"2018/12/26");
script_set_attribute(attribute:"patch_publication_date", value:"2022/05/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/05/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tar");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tar-lang");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:tar-rmt");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");
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/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15', 'SUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);
var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP3", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP3", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(2|3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP2/3", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP3", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'tar-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-lang-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-lang-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-rmt-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-rmt-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
{'reference':'tar-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-lang-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-lang-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-rmt-1.34-150000.3.12.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-rmt-1.34-150000.3.12.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-basesystem-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
{'reference':'tar-1.34-150000.3.12.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_RT-release-15.2']},
{'reference':'tar-lang-1.34-150000.3.12.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_RT-release-15.2']},
{'reference':'tar-rmt-1.34-150000.3.12.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_RT-release-15.2']}
];
var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var exists_check = NULL;
var rpm_spec_vers_cmp = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 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['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && _release) {
if (exists_check) {
var check_flag = 0;
foreach var check (exists_check) {
if (!rpm_exists(release:_release, rpm:check)) continue;
check_flag++;
}
if (!check_flag) continue;
}
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'tar / tar-lang / tar-rmt');
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | tar | p-cpe:/a:novell:suse_linux:tar |
novell | suse_linux | tar-lang | p-cpe:/a:novell:suse_linux:tar-lang |
novell | suse_linux | tar-rmt | p-cpe:/a:novell:suse_linux:tar-rmt |
novell | suse_linux | 15 | cpe:/o:novell:suse_linux:15 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20482
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9923
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20193
www.nessus.org/u?54b686a8
bugzilla.suse.com/1029961
bugzilla.suse.com/1120610
bugzilla.suse.com/1130496
bugzilla.suse.com/1181131
www.suse.com/security/cve/CVE-2018-20482
www.suse.com/security/cve/CVE-2019-9923
www.suse.com/security/cve/CVE-2021-20193
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
Percentile
85.9%