Vulnerabilities > CVE-2009-0757 - Buffer Errors vulnerability in Mpfr GNU Mpfr 2.4.0

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
mpfr
CWE-119
nessus

Summary

Multiple buffer overflows in GNU MPFR 2.4.0 allow context-dependent attackers to cause a denial of service (crash) via the (1) mpfr_snprintf and (2) mpfr_vsnprintf functions.

Vulnerable Configurations

Part Description Count
Application
Mpfr
1

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 familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-772-1.NASL
    descriptionIt was discovered that MPFR improperly handled string lengths in its print routines. If a user or automated system were tricked into processing specially crafted data with applications linked against MPFR, an attacker could cause a denial of service or execute arbitrary code with privileges of the user invoking the program. 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 id38715
    published2009-05-08
    reporterUbuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/38715
    titleUbuntu 9.04 : mpfr vulnerability (USN-772-1)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Ubuntu Security Notice USN-772-1. The text 
    # itself is copyright (C) Canonical, Inc. See 
    # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
    # trademark of Canonical, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(38715);
      script_version("1.14");
      script_cvs_date("Date: 2019/08/02 13:33:02");
    
      script_cve_id("CVE-2009-0757");
      script_xref(name:"USN", value:"772-1");
    
      script_name(english:"Ubuntu 9.04 : mpfr vulnerability (USN-772-1)");
      script_summary(english:"Checks dpkg output for updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Ubuntu host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "It was discovered that MPFR improperly handled string lengths in its
    print routines. If a user or automated system were tricked into
    processing specially crafted data with applications linked against
    MPFR, an attacker could cause a denial of service or execute arbitrary
    code with privileges of the user invoking the program.
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://usn.ubuntu.com/772-1/"
      );
      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_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(119);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:lib64mpfr1");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmpfr-dev");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmpfr-doc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmpfr1ldbl");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.04");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2009/05/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2009/05/08");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Ubuntu Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("ubuntu.inc");
    include("misc_func.inc");
    
    if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/Ubuntu/release");
    if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
    release = chomp(release);
    if (! ereg(pattern:"^(9\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 9.04", "Ubuntu " + release);
    if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);
    
    flag = 0;
    
    if (ubuntu_check(osver:"9.04", pkgname:"lib64mpfr1", pkgver:"2.4.0-1ubuntu3.1")) flag++;
    if (ubuntu_check(osver:"9.04", pkgname:"libmpfr-dev", pkgver:"2.4.0-1ubuntu3.1")) flag++;
    if (ubuntu_check(osver:"9.04", pkgname:"libmpfr-doc", pkgver:"2.4.0-1ubuntu3.1")) flag++;
    if (ubuntu_check(osver:"9.04", pkgname:"libmpfr1ldbl", pkgver:"2.4.0-1ubuntu3.1")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : ubuntu_report_get()
      );
      exit(0);
    }
    else
    {
      tested = ubuntu_pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "lib64mpfr1 / libmpfr-dev / libmpfr-doc / libmpfr1ldbl");
    }
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-200903-13.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-200903-13 (MPFR: Denial of Service) Multiple buffer overflows have been reported in the mpfr_snprintf() and mpfr_vsnprintf() functions. Impact : A remote user could exploit the vulnerability to cause a Denial of Service in an application using MPFR via unknown vectors. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id35811
    published2009-03-10
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/35811
    titleGLSA-200903-13 : MPFR: Denial of Service
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 200903-13.
    #
    # The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
    # and licensed under the Creative Commons - Attribution / Share Alike 
    # license. See http://creativecommons.org/licenses/by-sa/3.0/
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(35811);
      script_version("1.14");
      script_cvs_date("Date: 2019/08/02 13:32:45");
    
      script_cve_id("CVE-2009-0757");
      script_xref(name:"GLSA", value:"200903-13");
    
      script_name(english:"GLSA-200903-13 : MPFR: Denial of Service");
      script_summary(english:"Checks for updated package(s) in /var/db/pkg");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Gentoo host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The remote host is affected by the vulnerability described in GLSA-200903-13
    (MPFR: Denial of Service)
    
        Multiple buffer overflows have been reported in the mpfr_snprintf() and
        mpfr_vsnprintf() functions.
      
    Impact :
    
        A remote user could exploit the vulnerability to cause a Denial of
        Service in an application using MPFR via unknown vectors.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/200903-13"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All MPRF users should upgrade to the latest version:
        # emerge --sync
        # emerge --ask --oneshot --verbose '>=dev-libs/mpfr-2.4.1'"
      );
      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_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(119);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mpfr");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2009/03/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2009/03/10");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
      script_family(english:"Gentoo Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("qpkg.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
    if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (qpkg_check(package:"dev-libs/mpfr", unaffected:make_list("ge 2.4.1"), vulnerable:make_list("lt 2.4.1"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "MPFR");
    }