The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3361 advisory.
SCAN
or KEYS
) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9. (CVE-2022-36021)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 Debian Security Advisory dla-3361. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(172508);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/14");
script_cve_id("CVE-2022-36021");
script_name(english:"Debian DLA-3361-1 : redis - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3361
advisory.
- Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands
(like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis,
causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11,
7.0.9. (CVE-2022-36021)
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://www.debian.org/lts/security/2023/dla-3361");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-36021");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/redis");
script_set_attribute(attribute:"solution", value:
"Upgrade the redis packages.
For Debian 10 Buster, this problem has been fixed in version 5");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2022-36021");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/03/01");
script_set_attribute(attribute:"patch_publication_date", value:"2023/03/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-sentinel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:redis-tools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian 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/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var 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, 'Debian', cpu);
var pkgs = [
{'release': '10.0', 'prefix': 'redis', 'reference': '5:5.0.14-1+deb10u3'},
{'release': '10.0', 'prefix': 'redis-sentinel', 'reference': '5:5.0.14-1+deb10u3'},
{'release': '10.0', 'prefix': 'redis-server', 'reference': '5:5.0.14-1+deb10u3'},
{'release': '10.0', 'prefix': 'redis-tools', 'reference': '5:5.0.14-1+deb10u3'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var _release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (_release && prefix && reference) {
if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'redis / redis-sentinel / redis-server / redis-tools');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | redis | p-cpe:/a:debian:debian_linux:redis |
debian | debian_linux | redis-sentinel | p-cpe:/a:debian:debian_linux:redis-sentinel |
debian | debian_linux | redis-server | p-cpe:/a:debian:debian_linux:redis-server |
debian | debian_linux | redis-tools | p-cpe:/a:debian:debian_linux:redis-tools |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |