Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS : Python vulnerabilities (USN-7015-1)

2024-09-1600:00:00

www.tenable.com

ubuntu

python

vulnerabilities

email module

tarfile

headers

denial of service

http cookies

zipfile

CVSS3

7.5

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

CVSS4

8.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:N/S:N/AU:N/R:U/RE:L

AI Score

6.5

Confidence

High

JSON

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7015-1 advisory.

It was discovered that the Python email module incorrectly parsed email addresses that contain special     characters. A remote attacker could possibly use this issue to bypass certain protection mechanisms.
(CVE-2023-27043)

It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A     remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of     service. (CVE-2024-6232)

It was discovered that the Python email module incorrectly quoted newlines for email headers. A remote     attacker could possibly use this issue to perform header injection. (CVE-2024-6923)

It was discovered that the Python http.cookies module incorrectly handled parsing cookies that contained     backslashes for quoted characters. A remote attacker could possibly use this issue to cause Python to     consume resources, leading to a denial of service. (CVE-2024-7592)

It was discovered that the Python zipfile module incorrectly handled certain malformed zip files. A remote     attacker could possibly use this issue to cause Python to stop responding, resulting in a denial of     service. (CVE-2024-8088)

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-7015-1. 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(207282);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/16");

  script_cve_id(
    "CVE-2023-27043",
    "CVE-2024-6232",
    "CVE-2024-6923",
    "CVE-2024-7592",
    "CVE-2024-8088"
  );
  script_xref(name:"USN", value:"7015-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS : Python vulnerabilities (USN-7015-1)");

  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 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-7015-1 advisory.

    It was discovered that the Python email module incorrectly parsed email addresses that contain special
    characters. A remote attacker could possibly use this issue to bypass certain protection mechanisms.
    (CVE-2023-27043)

    It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A
    remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of
    service. (CVE-2024-6232)

    It was discovered that the Python email module incorrectly quoted newlines for email headers. A remote
    attacker could possibly use this issue to perform header injection. (CVE-2024-6923)

    It was discovered that the Python http.cookies module incorrectly handled parsing cookies that contained
    backslashes for quoted characters. A remote attacker could possibly use this issue to cause Python to
    consume resources, leading to a denial of service. (CVE-2024-7592)

    It was discovered that the Python zipfile module incorrectly handled certain malformed zip files. A remote
    attacker could possibly use this issue to cause Python to stop responding, resulting in a denial of
    service. (CVE-2024-8088)

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-7015-1");
  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:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-27043");

  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:"2023/04/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  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:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:idle-python3.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:idle-python3.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:idle-python3.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.10-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.10-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.10-stdlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.10-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.12-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.12-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.12-stdlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.12-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.12t64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.8-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.8-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.8-stdlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython3.8-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-nopie");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.10-venv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-nopie");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.12-venv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.8-venv");
  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 (! ('20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 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': '20.04', 'pkgname': 'idle-python3.8', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'libpython3.8', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'libpython3.8-dev', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'libpython3.8-minimal', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'libpython3.8-stdlib', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'libpython3.8-testsuite', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8-dev', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8-examples', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8-full', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8-minimal', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '20.04', 'pkgname': 'python3.8-venv', 'pkgver': '3.8.10-0ubuntu1~20.04.12'},
    {'osver': '22.04', 'pkgname': 'idle-python3.10', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'libpython3.10', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'libpython3.10-dev', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'libpython3.10-minimal', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'libpython3.10-stdlib', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'libpython3.10-testsuite', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-dev', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-examples', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-full', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-minimal', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-nopie', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '22.04', 'pkgname': 'python3.10-venv', 'pkgver': '3.10.12-1~22.04.6'},
    {'osver': '24.04', 'pkgname': 'idle-python3.12', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'libpython3.12-dev', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'libpython3.12-minimal', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'libpython3.12-stdlib', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'libpython3.12-testsuite', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'libpython3.12t64', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-dev', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-examples', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-full', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-minimal', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-nopie', 'pkgver': '3.12.3-1ubuntu0.2'},
    {'osver': '24.04', 'pkgname': 'python3.12-venv', 'pkgver': '3.12.3-1ubuntu0.2'}
];

var flag = 0;
foreach var 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)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'idle-python3.10 / idle-python3.12 / idle-python3.8 / libpython3.10 / etc');
}