The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4763-1 advisory.
An issue was discovered in Pillow before 8.1.1. TiffDecode has a heap-based buffer overflow when decoding crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode. NOTE: this issue exists because of an incomplete fix for CVE-2020-35654. (CVE-2021-25289)
An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an invalid size. (CVE-2021-25290)
An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is an out-of-bounds read in TiffreadRGBATile via invalid tile boundaries. (CVE-2021-25291)
An issue was discovered in Pillow before 8.1.1. The PDF parser allows a regular expression DoS (ReDoS) attack via a crafted PDF file because of a catastrophic backtracking regex. (CVE-2021-25292)
An issue was discovered in Pillow before 8.1.1. There is an out-of-bounds read in SGIRleDecode.c.
(CVE-2021-25293)
Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for a BLP container, and thus an attempted memory allocation can be very large. (CVE-2021-27921)
Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICNS container, and thus an attempted memory allocation can be very large. (CVE-2021-27922)
Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large. (CVE-2021-27923)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4763-1. 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(147998);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/21");
script_cve_id(
"CVE-2021-25289",
"CVE-2021-25290",
"CVE-2021-25291",
"CVE-2021-25292",
"CVE-2021-25293",
"CVE-2021-27921",
"CVE-2021-27922",
"CVE-2021-27923"
);
script_xref(name:"USN", value:"4763-1");
script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Pillow vulnerabilities (USN-4763-1)");
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 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-4763-1 advisory.
- An issue was discovered in Pillow before 8.1.1. TiffDecode has a heap-based buffer overflow when decoding
crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode. NOTE: this
issue exists because of an incomplete fix for CVE-2020-35654. (CVE-2021-25289)
- An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an
invalid size. (CVE-2021-25290)
- An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is an out-of-bounds read in
TiffreadRGBATile via invalid tile boundaries. (CVE-2021-25291)
- An issue was discovered in Pillow before 8.1.1. The PDF parser allows a regular expression DoS (ReDoS)
attack via a crafted PDF file because of a catastrophic backtracking regex. (CVE-2021-25292)
- An issue was discovered in Pillow before 8.1.1. There is an out-of-bounds read in SGIRleDecode.c.
(CVE-2021-25293)
- Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the
reported size of a contained image is not properly checked for a BLP container, and thus an attempted
memory allocation can be very large. (CVE-2021-27921)
- Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the
reported size of a contained image is not properly checked for an ICNS container, and thus an attempted
memory allocation can be very large. (CVE-2021-27922)
- Pillow before 8.1.1 allows attackers to cause a denial of service (memory consumption) because the
reported size of a contained image is not properly checked for an ICO container, and thus an attempted
memory allocation can be very large. (CVE-2021-27923)
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://ubuntu.com/security/notices/USN-4763-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
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:H/I:H/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-2021-25289");
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:"2021/03/03");
script_set_attribute(attribute:"patch_publication_date", value:"2021/03/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/23");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-imaging");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-pil");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-pil.imagetk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-pil");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-pil.imagetk");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2021-2023 Canonical, Inc. / NASL script (C) 2021-2023 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 (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04', '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': '16.04', 'pkgname': 'python-imaging', 'pkgver': '3.1.2-0ubuntu1.6'},
{'osver': '16.04', 'pkgname': 'python-pil', 'pkgver': '3.1.2-0ubuntu1.6'},
{'osver': '16.04', 'pkgname': 'python-pil.imagetk', 'pkgver': '3.1.2-0ubuntu1.6'},
{'osver': '16.04', 'pkgname': 'python3-pil', 'pkgver': '3.1.2-0ubuntu1.6'},
{'osver': '16.04', 'pkgname': 'python3-pil.imagetk', 'pkgver': '3.1.2-0ubuntu1.6'},
{'osver': '18.04', 'pkgname': 'python-pil', 'pkgver': '5.1.0-1ubuntu0.5'},
{'osver': '18.04', 'pkgname': 'python-pil.imagetk', 'pkgver': '5.1.0-1ubuntu0.5'},
{'osver': '18.04', 'pkgname': 'python3-pil', 'pkgver': '5.1.0-1ubuntu0.5'},
{'osver': '18.04', 'pkgname': 'python3-pil.imagetk', 'pkgver': '5.1.0-1ubuntu0.5'},
{'osver': '20.04', 'pkgname': 'python3-pil', 'pkgver': '7.0.0-4ubuntu0.3'},
{'osver': '20.04', 'pkgname': 'python3-pil.imagetk', 'pkgver': '7.0.0-4ubuntu0.3'}
];
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, 'python-imaging / python-pil / python-pil.imagetk / python3-pil / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:lts |
canonical | ubuntu_linux | 18.04 | cpe:/o:canonical:ubuntu_linux:18.04:-:lts |
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:lts |
canonical | ubuntu_linux | python-imaging | p-cpe:/a:canonical:ubuntu_linux:python-imaging |
canonical | ubuntu_linux | python-pil | p-cpe:/a:canonical:ubuntu_linux:python-pil |
canonical | ubuntu_linux | python-pil.imagetk | p-cpe:/a:canonical:ubuntu_linux:python-pil.imagetk |
canonical | ubuntu_linux | python3-pil | p-cpe:/a:canonical:ubuntu_linux:python3-pil |
canonical | ubuntu_linux | python3-pil.imagetk | p-cpe:/a:canonical:ubuntu_linux:python3-pil.imagetk |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25289
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25290
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25291
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25292
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25293
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27921
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27922
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27923
ubuntu.com/security/notices/USN-4763-1