7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.005 Low
EPSS
Percentile
76.6%
The version of sysstat installed on the remote host is prior to 12.5.6-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-255 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 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2022 Security Advisory ALAS2022-2022-255.
##
include('compat.inc');
if (description)
{
script_id(168548);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/20");
script_cve_id("CVE-2022-39377");
script_name(english:"Amazon Linux 2022 : sysstat (ALAS2022-2022-255)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2022 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of sysstat installed on the remote host is prior to 12.5.6-1. It is, therefore, affected by a vulnerability
as referenced in the ALAS2022-2022-255 advisory.
- sysstat is a set of system performance tools for the Linux operating system. On 32 bit systems, in
versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in
sa_common.c. The allocate_structures function insufficiently checks bounds before arithmetic
multiplication, allowing for an overflow in the size allocated for the buffer representing system
activities. This issue may lead to Remote Code Execution (RCE). This issue has been patched in version
12.7.1. (CVE-2022-39377)
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:"https://alas.aws.amazon.com/AL2022/ALAS-2022-255.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-39377.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update sysstat' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:N/UI:R/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-2022-39377");
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:"2022/11/08");
script_set_attribute(attribute:"patch_publication_date", value:"2022/12/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:sysstat");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:sysstat-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:sysstat-debugsource");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2022");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux 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/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2022")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2022", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'sysstat-12.5.6-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-12.5.6-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-12.5.6-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debuginfo-12.5.6-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debuginfo-12.5.6-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debuginfo-12.5.6-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debugsource-12.5.6-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debugsource-12.5.6-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
{'reference':'sysstat-debugsource-12.5.6-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', '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 = 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_HOLE,
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, "sysstat / sysstat-debuginfo / sysstat-debugsource");
}