Vulnerabilities > CVE-2015-4054 - Null Pointer Dereference vulnerability in Pgbouncer

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
pgbouncer
CWE-476
nessus

Summary

PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_8FBD41870F1811E5B6A8002590263BF5.NASL
    descriptionPgBouncer reports : Fix remote crash - invalid packet order causes lookup of NULL pointer. Not exploitable, just DoS.
    last seen2020-06-01
    modified2020-06-02
    plugin id84105
    published2015-06-11
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/84105
    titleFreeBSD : pgbouncer -- remote denial of service (8fbd4187-0f18-11e5-b6a8-002590263bf5)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2018 Jacques Vidrine and contributors
    #
    # Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
    # HTML, PDF, PostScript, RTF and so forth) with or without modification,
    # are permitted provided that the following conditions are met:
    # 1. Redistributions of source code (VuXML) must retain the above
    #    copyright notice, this list of conditions and the following
    #    disclaimer as the first lines of this file unmodified.
    # 2. Redistributions in compiled form (transformed to other DTDs,
    #    published online in any format, converted to PDF, PostScript,
    #    RTF and other formats) must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer
    #    in the documentation and/or other materials provided with the
    #    distribution.
    # 
    # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
    # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
    # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
    # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
    # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
    # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(84105);
      script_version("2.5");
      script_cvs_date("Date: 2018/11/21 10:46:31");
    
      script_cve_id("CVE-2015-4054");
    
      script_name(english:"FreeBSD : pgbouncer -- remote denial of service (8fbd4187-0f18-11e5-b6a8-002590263bf5)");
      script_summary(english:"Checks for updated package in pkg_info output");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote FreeBSD host is missing a security-related update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "PgBouncer reports :
    
    Fix remote crash - invalid packet order causes lookup of NULL pointer.
    Not exploitable, just DoS."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://pgbouncer.github.io/2015/04/pgbouncer-1-5-5/"
      );
      # http://www.openwall.com/lists/oss-security/2015/05/21/2
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.openwall.com/lists/oss-security/2015/05/21/2"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200507"
      );
      # https://vuxml.freebsd.org/freebsd/8fbd4187-0f18-11e5-b6a8-002590263bf5.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?68a7a1c3"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected package.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:pgbouncer");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/08");
      script_set_attribute(attribute:"patch_publication_date", value:"2015/06/10");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/11");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"FreeBSD Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("freebsd_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
    if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (pkg_test(save_report:TRUE, pkg:"pgbouncer<1.5.5")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201701-24.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201701-24 (PgBouncer: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in PgBouncer. Please review the CVE identifiers referenced below for details. Impact : A remote attacker might send a specially crafted package possibly resulting in a Denial of Service condition. Furthermore, a remote attacker might bypass authentication in configurations using the &ldquo;auth_user&rdquo; feature. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id96418
    published2017-01-12
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/96418
    titleGLSA-201701-24 : PgBouncer: Multiple vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201701-24.
    #
    # The advisory text is Copyright (C) 2001-2018 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(96418);
      script_version("$Revision: 3.4 $");
      script_cvs_date("$Date: 2018/01/26 17:15:57 $");
    
      script_cve_id("CVE-2015-4054", "CVE-2015-6817");
      script_xref(name:"GLSA", value:"201701-24");
    
      script_name(english:"GLSA-201701-24 : PgBouncer: Multiple vulnerabilities");
      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-201701-24
    (PgBouncer: Multiple vulnerabilities)
    
        Multiple vulnerabilities have been discovered in PgBouncer. Please
          review the CVE identifiers referenced below for details.
      
    Impact :
    
        A remote attacker might send a specially crafted package possibly
          resulting in a Denial of Service condition. Furthermore, a remote
          attacker might bypass authentication in configurations using the
          &ldquo;auth_user&rdquo; feature.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201701-24"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All PgBouncer users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=dev-db/pgbouncer-1.7.2'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:pgbouncer");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/01/11");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/12");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2018 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-db/pgbouncer", unaffected:make_list("ge 1.7.2"), vulnerable:make_list("lt 1.7.2"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "PgBouncer");
    }