CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
85.7%
The version of xz installed on the remote host is prior to 5.2.5. It is, therefore, affected by a vulnerability as referenced in the SSA:2022-104-03 advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
##
#
# The descriptive text and package checks in this plugin were
# extracted from Slackware Security Advisory SSA:2022-104-03. The text
# itself is copyright (C) Slackware Linux, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(159747);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/07");
script_cve_id("CVE-2022-1271");
script_xref(name:"IAVA", value:"2024-A-0327");
script_name(english:"Slackware Linux 14.0 / 14.1 / 14.2 / 15.0 / current xz Vulnerability (SSA:2022-104-03)");
script_set_attribute(attribute:"synopsis", value:
"The remote Slackware Linux host is missing a security update to xz.");
script_set_attribute(attribute:"description", value:
"The version of xz installed on the remote host is prior to 5.2.5. It is, therefore, affected by a vulnerability as
referenced in the SSA:2022-104-03 advisory.
- An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the
attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content
to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing
filenames with two or more newlines where selected content and the target file names are embedded in
crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write
arbitrary files on the system. (CVE-2022-1271)
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:"solution", value:
"Upgrade the affected xz package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
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:L/UI:N/S:U/C:H/I:H/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-2022-1271");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/04/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:xz");
script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1");
script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.2");
script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:15.0");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Slackware Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");
exit(0);
}
include("slackware.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Slackware", cpu);
var flag = 0;
var constraints = [
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.0', 'service_pack' : '1_slack14.0', 'arch' : 'i486' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.0', 'service_pack' : '1_slack14.0', 'arch' : 'x86_64' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.1', 'service_pack' : '1_slack14.1', 'arch' : 'i486' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.1', 'service_pack' : '1_slack14.1', 'arch' : 'x86_64' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.2', 'service_pack' : '1_slack14.2', 'arch' : 'i586' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '14.2', 'service_pack' : '1_slack14.2', 'arch' : 'x86_64' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '15.0', 'service_pack' : '4_slack15.0', 'arch' : 'i586' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : '15.0', 'service_pack' : '4_slack15.0', 'arch' : 'x86_64' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : 'current', 'service_pack' : '4', 'arch' : 'i586' },
{ 'fixed_version' : '5.2.5', 'product' : 'xz', 'os_name' : 'Slackware Linux', 'os_version' : 'current', 'service_pack' : '4', 'arch' : 'x86_64' }
];
foreach constraint (constraints) {
var pkg_arch = constraint['arch'];
var arch = NULL;
if (pkg_arch == "x86_64") {
arch = pkg_arch;
}
if (slackware_check(osver:constraint['os_version'],
arch:arch,
pkgname:constraint['product'],
pkgver:constraint['fixed_version'],
pkgarch:pkg_arch,
pkgnum:constraint['service_pack'])) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : slackware_report_get()
);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
85.7%