Vulnerabilities > CVE-2018-14779 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Yubico PIV Manager, PIV Tool and Smart Card Minidriver

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
yubico
CWE-119
nessus
NVD
Published: 2018-08-15
Updated: 2020-02-25

Summary

A buffer overflow issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `ykpiv_transfer_data()`: {% highlight c %} if(*out_len + recv_len - 2 > max_out) { fprintf(stderr, "Output buffer to small, wanted to write %lu, max was %lu.", *out_len + recv_len - 2, max_out); } if(out_data) { memcpy(out_data, data, recv_len - 2); out_data += recv_len - 2; *out_len += recv_len - 2; } {% endhighlight %} -- it is clearly checked whether the buffer is big enough to hold the data copied using `memcpy()`, but no error handling happens to avoid the `memcpy()` in such cases. This code path can be triggered with malicious data coming from a smartcard.

Vulnerable Configurations

Part Description Count
Application
Yubico
46

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-1341.NASL
    descriptionThis update for yubico-piv-tool fixes the following issues : Security issues fixed : - Fixed an buffer overflow and an out of bounds memory read in ykpiv_transfer_data(), which could be triggered by a malicious token. (CVE-2018-14779, bsc#1104809, YSA-2018-03) - Fixed an buffer overflow and an out of bounds memory read in _ykpiv_fetch_object(), which could be triggered by a malicious token. (CVE-2018-14780, bsc#1104811, YSA-2018-03) This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id124706
    published2019-05-09
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124706
    titleopenSUSE Security Update : yubico-piv-tool (openSUSE-2019-1341)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2019-1341.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(124706);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/21");

  script_cve_id("CVE-2018-14779", "CVE-2018-14780");

  script_name(english:"openSUSE Security Update : yubico-piv-tool (openSUSE-2019-1341)");
  script_summary(english:"Check for the openSUSE-2019-1341 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for yubico-piv-tool fixes the following issues :

Security issues fixed :

  - Fixed an buffer overflow and an out of bounds memory
    read in ykpiv_transfer_data(), which could be triggered
    by a malicious token. (CVE-2018-14779, bsc#1104809,
    YSA-2018-03)

  - Fixed an buffer overflow and an out of bounds memory
    read in _ykpiv_fetch_object(), which could be triggered
    by a malicious token. (CVE-2018-14780, bsc#1104811,
    YSA-2018-03)

This update was imported from the SUSE:SLE-15:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1104809"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1104811"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected yubico-piv-tool packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:P/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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykcs11-1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykcs11-1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykpiv-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykpiv1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libykpiv1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:yubico-piv-tool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:yubico-piv-tool-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:yubico-piv-tool-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/09");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.0", reference:"libykcs11-1-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"libykcs11-1-debuginfo-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"libykcs11-devel-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"libykpiv-devel-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"libykpiv1-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"libykpiv1-debuginfo-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"yubico-piv-tool-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"yubico-piv-tool-debuginfo-1.5.0-lp150.2.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"yubico-piv-tool-debugsource-1.5.0-lp150.2.3.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libykcs11-1 / libykcs11-1-debuginfo / libykcs11-devel / etc");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-1123-1.NASL
    descriptionThis update for yubico-piv-tool fixes the following issues : Security issues fixed : Fixed an buffer overflow and an out of bounds memory read in ykpiv_transfer_data(), which could be triggered by a malicious token. (CVE-2018-14779, bsc#1104809, YSA-2018-03) Fixed an buffer overflow and an out of bounds memory read in _ykpiv_fetch_object(), which could be triggered by a malicious token. (CVE-2018-14780, bsc#1104811, YSA-2018-03) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id124455
    published2019-05-01
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124455
    titleSUSE SLED15 / SLES15 Security Update : yubico-piv-tool (SUSE-SU-2019:1123-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:1123-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(124455);
  script_version("1.3");
  script_cvs_date("Date: 2020/01/21");

  script_cve_id("CVE-2018-14779", "CVE-2018-14780");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : yubico-piv-tool (SUSE-SU-2019:1123-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for yubico-piv-tool fixes the following issues :

Security issues fixed :

Fixed an buffer overflow and an out of bounds memory read in
ykpiv_transfer_data(), which could be triggered by a malicious token.
(CVE-2018-14779, bsc#1104809, YSA-2018-03)

Fixed an buffer overflow and an out of bounds memory read in
_ykpiv_fetch_object(), which could be triggered by a malicious token.
(CVE-2018-14780, bsc#1104811, YSA-2018-03)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1104809"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1104811"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-14779/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-14780/"
  );
  # https://www.suse.com/support/update/announcement/2019/suse-su-20191123-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?db7bfc61"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch
SUSE-SLE-Module-Basesystem-15-2019-1123=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:P/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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykcs11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykcs11-1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykpiv-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykpiv1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libykpiv1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:yubico-piv-tool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:yubico-piv-tool-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:yubico-piv-tool-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykcs11-1-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykcs11-1-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykcs11-devel-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykpiv-devel-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykpiv1-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libykpiv1-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"yubico-piv-tool-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"yubico-piv-tool-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"yubico-piv-tool-debugsource-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykcs11-1-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykcs11-1-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykcs11-devel-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykpiv-devel-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykpiv1-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libykpiv1-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"yubico-piv-tool-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"yubico-piv-tool-debuginfo-1.5.0-3.3.33")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"yubico-piv-tool-debugsource-1.5.0-3.3.33")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "yubico-piv-tool");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-969.NASL
    descriptionThis update for yubico-piv-tool fixes the following issues : Security issues fixed : - CVE-2018-14779: Fixed an buffer overflow and an out of bounds memory read in ykpiv_transfer_data(), which could be triggered by a malicious token. (boo#1104809, YSA-2018-03) - CVE-2018-14780: Fixed an buffer overflow and an out of bounds memory read in _ykpiv_fetch_object(), which could be triggered by a malicious token. (boo#1104811, YSA-2018-03)
    last seen2020-06-05
    modified2018-09-06
    plugin id117329
    published2018-09-06
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117329
    titleopenSUSE Security Update : yubico-piv-tool (openSUSE-2018-969)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-4276-1.NASL
    descriptionIt was discovered that libykpiv, a supporting library of the Yubico PIV Tool and YubiKey PIV Manager, mishandled specially crafted input. An attacker with a custom-made, malicious USB device could potentially execute arbitrary code on a computer running the Yubico PIV Tool or Yubikey PIV Manager. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id133648
    published2020-02-12
    reporterUbuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133648
    titleUbuntu 18.04 LTS : Yubico PIV Tool vulnerabilities (USN-4276-1)

References