Vulnerabilities > CVE-2010-3074 - Cryptographic Issues vulnerability in Arg0 Encfs

047910
CVSS 2.1 - LOW
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
local
low complexity
arg0
CWE-310
nessus
NVD
Published: 2010-09-17
Updated: 2011-01-14

Summary

SSL_Cipher.cpp in EncFS before 1.7.0 uses an improper combination of an AES cipher and a CBC cipher mode for encrypted filesystems, which allows local users to obtain sensitive information via a watermark attack.

Vulnerable Configurations

Part Description Count
Application
Arg0
6

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Signature Spoofing by Key Recreation
    An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2010-14200.NASL
    descriptionVer. 1.7.2 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id49241
    published2010-09-16
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/49241
    titleFedora 14 : fuse-encfs-1.7.2-1.fc14 (2010-14200)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2010-14200.
#

include("compat.inc");

if (description)
{
  script_id(49241);
  script_version("1.9");
  script_cvs_date("Date: 2019/08/02 13:32:31");

  script_cve_id("CVE-2010-3073", "CVE-2010-3074", "CVE-2010-3075");
  script_bugtraq_id(42779);
  script_xref(name:"FEDORA", value:"2010-14200");

  script_name(english:"Fedora 14 : fuse-encfs-1.7.2-1.fc14 (2010-14200)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Ver. 1.7.2

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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.redhat.com/show_bug.cgi?id=630460"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2010-September/047825.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b0e3d4b9"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected fuse-encfs package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:ND");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:fuse-encfs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:14");

  script_set_attribute(attribute:"patch_publication_date", value:"2010/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/09/16");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2010-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^14([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 14.x", "Fedora " + os_ver);

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

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

flag = 0;
if (rpm_check(release:"FC14", reference:"fuse-encfs-1.7.2-1.fc14")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fuse-encfs");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2010-14254.NASL
    descriptionVer. 1.7.2 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id49244
    published2010-09-16
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/49244
    titleFedora 12 : fuse-encfs-1.7.2-1.fc12 (2010-14254)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2010-14254.
#

include("compat.inc");

if (description)
{
  script_id(49244);
  script_version("1.9");
  script_cvs_date("Date: 2019/08/02 13:32:31");

  script_cve_id("CVE-2010-3073", "CVE-2010-3074", "CVE-2010-3075");
  script_bugtraq_id(42779);
  script_xref(name:"FEDORA", value:"2010-14254");

  script_name(english:"Fedora 12 : fuse-encfs-1.7.2-1.fc12 (2010-14254)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Ver. 1.7.2

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora 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.redhat.com/show_bug.cgi?id=630460"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2010-September/047798.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9ca1728f"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected fuse-encfs package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:ND");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:fuse-encfs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:12");

  script_set_attribute(attribute:"patch_publication_date", value:"2010/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/09/16");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2010-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^12([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 12.x", "Fedora " + os_ver);

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

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

flag = 0;
if (rpm_check(release:"FC12", reference:"fuse-encfs-1.7.2-1.fc12")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fuse-encfs");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2010-14268.NASL
    descriptionVer. 1.7.2 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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 id49245
    published2010-09-16
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/49245
    titleFedora 13 : fuse-encfs-1.7.2-1.fc13 (2010-14268)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_2_ENCFS-101206.NASL
    descriptionThis update of encfs fixes : - CVE-2010-3073: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Only 32 bit of file IV used - CVE-2010-3074: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Watermarking attack The patch for CVE-2010-3075 (Last block with single byte is insecure) was not applied because upstream disabled it by default, expect for expert mode.
    last seen2020-06-01
    modified2020-06-02
    plugin id53711
    published2011-05-05
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/53711
    titleopenSUSE Security Update : encfs (openSUSE-SU-2010:1028-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_3_ENCFS-101206.NASL
    descriptionThis update of encfs fixes : - CVE-2010-3073: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Only 32 bit of file IV used - CVE-2010-3074: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Watermarking attack The patch for CVE-2010-3075 (Last block with single byte is insecure) was not applied because upstream disabled it by default, expect for expert mode.
    last seen2020-06-01
    modified2020-06-02
    plugin id75476
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75476
    titleopenSUSE Security Update : encfs (openSUSE-SU-2010:1028-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_1_ENCFS-101206.NASL
    descriptionThis update of encfs fixes : - CVE-2010-3073: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Only 32 bit of file IV used - CVE-2010-3074: CVSS v2 Base Score: 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N): Cryptographic Issues (CWE-310): encfs Watermarking attack The patch for CVE-2010-3075 (Last block with single byte is insecure) was not applied because upstream disabled it by default, expect for expert mode.
    last seen2020-06-01
    modified2020-06-02
    plugin id53656
    published2011-05-05
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/53656
    titleopenSUSE Security Update : encfs (openSUSE-SU-2010:1028-1)

References