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nessusUbuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-6794-1.NASL
HistoryMay 28, 2024 - 12:00 a.m.

Ubuntu 22.04 LTS / 23.10 / 24.04 LTS : FRR vulnerabilities (USN-6794-1)

2024-05-2800:00:00
Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
5
ubuntu
frr
vulnerabilities
bgp
ospf
denial of service
arbitrary code
usn-6794-1
remote attacker

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

7.9

Confidence

High

EPSS

0

Percentile

15.5%

The remote Ubuntu 22.04 LTS / 23.10 / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6794-1 advisory.

It was discovered that FRR incorrectly handled certain malformed BGP and OSPF packets. A remote attacker     could use this issue to cause FRR to crash, resulting in a denial of service, or possibly execute     arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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 Ubuntu Security Notice USN-6794-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(198041);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/03");

  script_cve_id(
    "CVE-2024-31948",
    "CVE-2024-31950",
    "CVE-2024-31951",
    "CVE-2024-34088"
  );
  script_xref(name:"USN", value:"6794-1");

  script_name(english:"Ubuntu 22.04 LTS / 23.10 / 24.04 LTS : FRR vulnerabilities (USN-6794-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 22.04 LTS / 23.10 / 24.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6794-1 advisory.

    It was discovered that FRR incorrectly handled certain malformed BGP and OSPF packets. A remote attacker
    could use this issue to cause FRR to crash, resulting in a denial of service, or possibly execute
    arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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://ubuntu.com/security/notices/USN-6794-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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: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-2024-31948");

  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:"2024/04/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:frr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:frr-pythontools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:frr-rpki-rtrlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:frr-snmp");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('22.04' >< os_release || '23.10' >< os_release || '24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 23.10 / 24.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '22.04', 'pkgname': 'frr', 'pkgver': '8.1-1ubuntu1.10'},
    {'osver': '22.04', 'pkgname': 'frr-pythontools', 'pkgver': '8.1-1ubuntu1.10'},
    {'osver': '22.04', 'pkgname': 'frr-rpki-rtrlib', 'pkgver': '8.1-1ubuntu1.10'},
    {'osver': '22.04', 'pkgname': 'frr-snmp', 'pkgver': '8.1-1ubuntu1.10'},
    {'osver': '23.10', 'pkgname': 'frr', 'pkgver': '8.4.4-1.1ubuntu1.4'},
    {'osver': '23.10', 'pkgname': 'frr-pythontools', 'pkgver': '8.4.4-1.1ubuntu1.4'},
    {'osver': '23.10', 'pkgname': 'frr-rpki-rtrlib', 'pkgver': '8.4.4-1.1ubuntu1.4'},
    {'osver': '23.10', 'pkgname': 'frr-snmp', 'pkgver': '8.4.4-1.1ubuntu1.4'},
    {'osver': '24.04', 'pkgname': 'frr', 'pkgver': '8.4.4-1.1ubuntu6.1'},
    {'osver': '24.04', 'pkgname': 'frr-pythontools', 'pkgver': '8.4.4-1.1ubuntu6.1'},
    {'osver': '24.04', 'pkgname': 'frr-rpki-rtrlib', 'pkgver': '8.4.4-1.1ubuntu6.1'},
    {'osver': '24.04', 'pkgname': 'frr-snmp', 'pkgver': '8.4.4-1.1ubuntu6.1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'frr / frr-pythontools / frr-rpki-rtrlib / frr-snmp');
}
VendorProductVersionCPE
canonicalubuntu_linux23.10cpe:/o:canonical:ubuntu_linux:23.10
canonicalubuntu_linuxfrr-snmpp-cpe:/a:canonical:ubuntu_linux:frr-snmp
canonicalubuntu_linux24.04cpe:/o:canonical:ubuntu_linux:24.04:-:lts
canonicalubuntu_linuxfrr-rpki-rtrlibp-cpe:/a:canonical:ubuntu_linux:frr-rpki-rtrlib
canonicalubuntu_linux22.04cpe:/o:canonical:ubuntu_linux:22.04:-:lts
canonicalubuntu_linuxfrr-pythontoolsp-cpe:/a:canonical:ubuntu_linux:frr-pythontools
canonicalubuntu_linuxfrrp-cpe:/a:canonical:ubuntu_linux:frr

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

7.9

Confidence

High

EPSS

0

Percentile

15.5%