CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
75.3%
The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5235 advisory.
By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver’s performance, effectively denying legitimate clients access to the DNS resolution service.
(CVE-2022-2795)
By sending specific queries to the resolver, an attacker can cause named to crash. (CVE-2022-3080)
By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources. (CVE-2022-38177)
By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources. (CVE-2022-38178)
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 descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-5235. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(165329);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/02");
script_cve_id(
"CVE-2022-2795",
"CVE-2022-3080",
"CVE-2022-38177",
"CVE-2022-38178"
);
script_name(english:"Debian DSA-5235-1 : bind9 - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-5235 advisory.
- By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the
resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
(CVE-2022-2795)
- By sending specific queries to the resolver, an attacker can cause named to crash. (CVE-2022-3080)
- By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can
trigger a small memory leak. It is possible to gradually erode available memory to the point where named
crashes for lack of resources. (CVE-2022-38177)
- By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can
trigger a small memory leak. It is possible to gradually erode available memory to the point where named
crashes for lack of resources. (CVE-2022-38178)
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://security-tracker.debian.org/tracker/source-package/bind9");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2022/dsa-5235");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-2795");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-3080");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-38177");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-38178");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/bind9");
script_set_attribute(attribute:"solution", value:
"Upgrade the bind9 packages.
For the stable distribution (bullseye), these problems have been fixed in version 1");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/AC:L/PR:N/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-2022-38178");
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:"2022/09/21");
script_set_attribute(attribute:"patch_publication_date", value:"2022/09/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-dnsutils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-host");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dnsutils");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022 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 release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(11)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'bind9', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-dev', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-dnsutils', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-doc', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-host', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-libs', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9-utils', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'bind9utils', 'reference': '1:9.16.33-1~deb11u1'},
{'release': '11.0', 'prefix': 'dnsutils', 'reference': '1:9.16.33-1~deb11u1'}
];
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_HOLE,
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, 'bind9 / bind9-dev / bind9-dnsutils / bind9-doc / bind9-host / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2795
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3080
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-38177
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-38178
packages.debian.org/source/bullseye/bind9
security-tracker.debian.org/tracker/CVE-2022-2795
security-tracker.debian.org/tracker/CVE-2022-3080
security-tracker.debian.org/tracker/CVE-2022-38177
security-tracker.debian.org/tracker/CVE-2022-38178
security-tracker.debian.org/tracker/source-package/bind9
www.debian.org/security/2022/dsa-5235