CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
60.9%
The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 / 21.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4964-1 advisory.
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert
. The bug is fixed in version v0.27.4. (CVE-2021-29463)
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert
. The bug is fixed in version v0.27.4. (CVE-2021-29464)
Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file.
An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert
. The bug is fixed in version v0.27.4. Please see our security policy for information about Exiv2 security. (CVE-2021-29473)
Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4. (CVE-2021-29623)
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An inefficient algorithm (quadratic complexity) was found in Exiv2 versions v0.27.3 and earlier. The inefficient algorithm is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as rm
. (CVE-2021-32617)
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 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4964-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(149906);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");
script_cve_id(
"CVE-2021-29463",
"CVE-2021-29464",
"CVE-2021-29473",
"CVE-2021-29623",
"CVE-2021-32617"
);
script_xref(name:"USN", value:"4964-1");
script_name(english:"Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Exiv2 vulnerabilities (USN-4964-1)");
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 / 21.04 host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-4964-1 advisory.
- Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata
of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds
read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could
potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick
the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing
the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to
trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such
as `insert`. The bug is fixed in version v0.27.4. (CVE-2021-29463)
- Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata
of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow
is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially
exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a
crafted image file. Note that this bug is only triggered when writing the metadata, which is a less
frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2
command-line application, you need to add an extra command-line argument such as `insert`. The bug is
fixed in version v0.27.4. (CVE-2021-29464)
- Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a
command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image
files. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file.
An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if
they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered
when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For
example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line
argument such as `insert`. The bug is fixed in version v0.27.4. Please see our security policy for
information about Exiv2 security. (CVE-2021-29473)
- Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2
is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of
image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a
crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack
memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in
version v0.27.4. (CVE-2021-29623)
- Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata
of image files. An inefficient algorithm (quadratic complexity) was found in Exiv2 versions v0.27.3 and
earlier. The inefficient algorithm is triggered when Exiv2 is used to write metadata into a crafted image
file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can
trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4. Note
that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2
operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line
application, you need to add an extra command-line argument such as `rm`. (CVE-2021-32617)
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-4964-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/AC:L/PR:N/UI:R/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-2021-29464");
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:"2021/04/26");
script_set_attribute(attribute:"patch_publication_date", value:"2021/05/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/25");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
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:exiv2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libexiv2-14");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libexiv2-27");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libexiv2-dev");
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': 'exiv2', 'pkgver': '0.25-2.1ubuntu16.04.7+esm2'},
{'osver': '16.04', 'pkgname': 'libexiv2-14', 'pkgver': '0.25-2.1ubuntu16.04.7+esm2'},
{'osver': '16.04', 'pkgname': 'libexiv2-dev', 'pkgver': '0.25-2.1ubuntu16.04.7+esm2'},
{'osver': '18.04', 'pkgname': 'exiv2', 'pkgver': '0.25-3.1ubuntu0.18.04.9'},
{'osver': '18.04', 'pkgname': 'libexiv2-14', 'pkgver': '0.25-3.1ubuntu0.18.04.9'},
{'osver': '18.04', 'pkgname': 'libexiv2-dev', 'pkgver': '0.25-3.1ubuntu0.18.04.9'},
{'osver': '20.04', 'pkgname': 'exiv2', 'pkgver': '0.27.2-8ubuntu2.4'},
{'osver': '20.04', 'pkgname': 'libexiv2-27', 'pkgver': '0.27.2-8ubuntu2.4'},
{'osver': '20.04', 'pkgname': 'libexiv2-dev', 'pkgver': '0.27.2-8ubuntu2.4'}
];
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_WARNING,
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, 'exiv2 / libexiv2-14 / libexiv2-27 / libexiv2-dev');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:esm |
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 | exiv2 | p-cpe:/a:canonical:ubuntu_linux:exiv2 |
canonical | ubuntu_linux | libexiv2-14 | p-cpe:/a:canonical:ubuntu_linux:libexiv2-14 |
canonical | ubuntu_linux | libexiv2-27 | p-cpe:/a:canonical:ubuntu_linux:libexiv2-27 |
canonical | ubuntu_linux | libexiv2-dev | p-cpe:/a:canonical:ubuntu_linux:libexiv2-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29463
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29464
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29473
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29623
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32617
ubuntu.com/security/notices/USN-4964-1
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
60.9%