Vulnerabilities > CVE-2004-0747 - Incorrect Calculation of Buffer Size vulnerability in Apache Http Server

047910
CVSS 7.8 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
apache
CWE-131
nessus

Summary

Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • 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.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.

Nessus

  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-200409-21.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-200409-21 (Apache 2, mod_dav: Multiple vulnerabilities) A potential infinite loop has been found in the input filter of mod_ssl (CAN-2004-0748) as well as a possible segmentation fault in the char_buffer_read function if reverse proxying to a SSL server is being used (CAN-2004-0751). Furthermore, mod_dav, as shipped in Apache httpd 2 or mod_dav 1.0.x for Apache 1.3, contains a NULL pointer dereference which can be triggered remotely (CAN-2004-0809). The third issue is an input validation error found in the IPv6 URI parsing routines within the apr-util library (CAN-2004-0786). Additionally a possible buffer overflow has been reported when expanding environment variables during the parsing of configuration files (CAN-2004-0747). Impact : A remote attacker could cause a Denial of Service either by aborting a SSL connection in a special way, resulting in CPU consumption, by exploiting the segmentation fault in mod_ssl or the mod_dav flaw. A remote attacker could also crash a httpd child process by sending a specially crafted URI. The last vulnerability could be used by a local user to gain the privileges of a httpd child, if the server parses a carefully prepared .htaccess file. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id14766
    published2004-09-17
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14766
    titleGLSA-200409-21 : Apache 2, mod_dav: Multiple vulnerabilities
    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 200409-21.
    #
    # 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(14766);
      script_version("1.17");
      script_cvs_date("Date: 2019/08/02 13:32:41");
    
      script_cve_id("CVE-2004-0747", "CVE-2004-0748", "CVE-2004-0751", "CVE-2004-0786", "CVE-2004-0809");
      script_xref(name:"GLSA", value:"200409-21");
    
      script_name(english:"GLSA-200409-21 : Apache 2, mod_dav: 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-200409-21
    (Apache 2, mod_dav: Multiple vulnerabilities)
    
        A potential infinite loop has been found in the input filter of mod_ssl
        (CAN-2004-0748) as well as a possible segmentation fault in the
        char_buffer_read function if reverse proxying to a SSL server is being used
        (CAN-2004-0751). Furthermore, mod_dav, as shipped in Apache httpd 2 or
        mod_dav 1.0.x for Apache 1.3, contains a NULL pointer dereference which can
        be triggered remotely (CAN-2004-0809). The third issue is an input
        validation error found in the IPv6 URI parsing routines within the apr-util
        library (CAN-2004-0786). Additionally a possible buffer overflow has been
        reported when expanding environment variables during the parsing of
        configuration files (CAN-2004-0747).
      
    Impact :
    
        A remote attacker could cause a Denial of Service either by aborting a SSL
        connection in a special way, resulting in CPU consumption, by exploiting
        the segmentation fault in mod_ssl or the mod_dav flaw. A remote attacker
        could also crash a httpd child process by sending a specially crafted URI.
        The last vulnerability could be used by a local user to gain the privileges
        of a httpd child, if the server parses a carefully prepared .htaccess file.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/200409-21"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Apache 2 users should upgrade to the latest version:
        # emerge sync
        # emerge -pv '>=www-servers/apache-2.0.51'
        # emerge '>=www-servers/apache-2.0.51'
        All mod_dav users should upgrade to the latest version:
        # emerge sync
        # emerge -pv '>=net-www/mod_dav-1.0.3-r2'
        # emerge '>=net-www/mod_dav-1.0.3-r2'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      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:gentoo:linux:apache");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mod_dav");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2004/09/16");
      script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/17");
      script_set_attribute(attribute:"vuln_publication_date", value:"2004/09/02");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2004-2019 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:"net-www/mod_dav", unaffected:make_list("ge 1.0.3-r2"), vulnerable:make_list("le 1.0.3-r1"))) flag++;
    if (qpkg_check(package:"www-servers/apache", unaffected:make_list("ge 2.0.51", "lt 2.0"), vulnerable:make_list("lt 2.0.51"))) 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, "Apache 2 / mod_dav");
    }
    
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_4D49F4BA071F11D9B45D000C41E2CDAD.NASL
    descriptionSITIC discovered a vulnerability in Apache 2
    last seen2020-06-01
    modified2020-06-02
    plugin id36910
    published2009-04-23
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36910
    titleFreeBSD : apache -- ap_resolve_env buffer overflow (4d49f4ba-071f-11d9-b45d-000c41e2cdad)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (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(36910);
      script_version("1.10");
      script_cvs_date("Date: 2019/08/02 13:32:36");
    
      script_cve_id("CVE-2004-0747");
    
      script_name(english:"FreeBSD : apache -- ap_resolve_env buffer overflow (4d49f4ba-071f-11d9-b45d-000c41e2cdad)");
      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:
    "SITIC discovered a vulnerability in Apache 2's handling of
    environmental variable settings in the httpd configuration files (the
    main `httpd.conf' and `.htaccess' files). According to a SITIC
    advisory :
    
    The buffer overflow occurs when expanding ${ENVVAR} constructs in
    .htaccess or httpd.conf files. The function ap_resolve_env() in
    server/util.c copies data from environment variables to the character
    array tmp with strcat(3), leading to a buffer overflow."
      );
      # http://lists.netsys.com/pipermail/full-disclosure/2004-September/026463.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?994407f9"
      );
      # https://vuxml.freebsd.org/freebsd/4d49f4ba-071f-11d9-b45d-000c41e2cdad.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?7ab21727"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected package.");
      script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:apache");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2004/09/15");
      script_set_attribute(attribute:"patch_publication_date", value:"2004/09/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2009-2019 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:"apache>=2.0<2.0.50_3")) 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 familyWeb Servers
    NASL idAPACHE_2_0_51.NASL
    descriptionAccording to its Server response header, the remote host is running a version of Apache 2.0.x prior to 2.0.51. It is, therefore, affected by multiple vulnerabilities : - An input validation issue in apr-util can be triggered by malformed IPv6 literal addresses and result in a buffer overflow (CVE-2004-0786). - There is a buffer overflow that can be triggered when expanding environment variables during configuration file parsing (CVE-2004-0747). - A segfault in mod_dav_ds when handling an indirect lock refresh can lead to a process crash (CVE-2004-0809). - A segfault in the SSL input filter can be triggered if using
    last seen2020-06-01
    modified2020-06-02
    plugin id14748
    published2004-09-16
    reporterThis script is Copyright (C) 2004-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14748
    titleApache 2.0.x < 2.0.51 Multiple Vulnerabilities (OF, DoS)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    
    include("compat.inc");
    
    if(description)
    {
     script_id(14748);
     script_cvs_date("Date: 2018/11/15 20:50:25");
     script_version("1.30");
    
     script_cve_id("CVE-2004-0747", "CVE-2004-0748", "CVE-2004-0751", "CVE-2004-0786", "CVE-2004-0809");
     script_bugtraq_id(11185, 11187);
    
     script_name(english:"Apache 2.0.x < 2.0.51 Multiple Vulnerabilities (OF, DoS)");
     
     script_set_attribute(attribute:"synopsis", value:
    "The remote web server is affected by multiple vulnerabilities." );
     script_set_attribute(attribute:"description", value:
    "According to its Server response header, the remote host is running a
    version of Apache 2.0.x prior to 2.0.51. It is, therefore, affected by
    multiple vulnerabilities :
    
      - An input validation issue in apr-util can be triggered
        by malformed IPv6 literal addresses and result in a 
        buffer overflow (CVE-2004-0786).
    
      - There is a buffer overflow that can be triggered when
        expanding environment variables during configuration
        file parsing (CVE-2004-0747).
    
      - A segfault in mod_dav_ds when handling an indirect lock
        refresh can lead to a process crash (CVE-2004-0809).
    
      - A segfault in the SSL input filter can be triggered
        if using 'speculative' mode by, for instance, a proxy
        request to an SSL server (CVE-2004-0751).
    
      - There is the potential for an infinite loop in mod_ssl
        (CVE-2004-0748)." );
     script_set_attribute(attribute:"see_also", value:"https://bz.apache.org/bugzilla/show_bug.cgi?id=31183" );
     script_set_attribute(attribute:"see_also", value:"https://archive.apache.org/dist/httpd/CHANGES_2.0" );
     script_set_attribute(attribute:"solution", value:"Upgrade to Apache 2.0.51 or later.");
     script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
     script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
     script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L");
     script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
     script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
     script_set_attribute(attribute:"exploit_available", value:"true");
    
     script_set_attribute(attribute:"plugin_publication_date", value: "2004/09/16");
     script_set_attribute(attribute:"vuln_publication_date", value: "2004/07/08");
    script_set_attribute(attribute:"plugin_type", value:"remote");
    script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:http_server");
    script_end_attributes();
    
     
     summary["english"] = "Checks version of Apache";
     
     script_summary(english:summary["english"]);
     
     script_category(ACT_GATHER_INFO);
     
     script_copyright(english:"This script is Copyright (C) 2004-2018 Tenable Network Security, Inc.");
     script_family(english:"Web Servers");
     script_dependencie("apache_http_version.nasl");
     script_require_keys("installed_sw/Apache");
     script_require_ports("Services/www", 80);
     exit(0);
    }
    
    #
    # The script code starts here
    #
    include("global_settings.inc");
    include("misc_func.inc");
    include("http.inc");
    include("audit.inc");
    include("install_func.inc");
    
    get_install_count(app_name:"Apache", exit_if_zero:TRUE);
    port = get_http_port(default:80);
    install = get_single_install(app_name:"Apache", port:port, exit_if_unknown_ver:TRUE);
    
    # Check if we could get a version first, then check if it was
    # backported
    version = get_kb_item_or_exit('www/apache/'+port+'/version', exit_code:1);
    backported = get_kb_item_or_exit('www/apache/'+port+'/backported', exit_code:1);
    
    if (report_paranoia < 2 && backported) audit(AUDIT_BACKPORT_SERVICE, port, "Apache");
    source = get_kb_item_or_exit('www/apache/'+port+'/source', exit_code:1);
    
    # Check if the version looks like either ServerTokens Major/Minor
    # was used
    if (version =~ '^2(\\.0)?$') exit(1, "The banner from the Apache server listening on port "+port+" - "+source+" - is not granular enough to make a determination.");
    if (version !~ "^\d+(\.\d+)*$") exit(1, "The version of Apache listening on port " + port + " - " + version + " - is non-numeric and, therefore, cannot be used to make a determination.");
    if (version =~ '^2\\.0' && ver_compare(ver:version, fix:'2.0.51') == -1)
    {
      if (report_verbosity > 0)
      {
        report = 
          '\n  Version source    : ' + source +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 2.0.51\n';
        security_warning(port:port, extra:report);
      }
      else security_warning(port);
      exit(0);
    }
    else audit(AUDIT_LISTEN_NOT_VULN, "Apache", port, install["version"]);
    
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2004-463.NASL
    descriptionUpdated httpd packages that include fixes for security issues are now available. The Apache HTTP server is a powerful, full-featured, efficient, and freely-available Web server. Four issues have been discovered affecting releases of the Apache HTTP 2.0 Server, up to and including version 2.0.50 : Testing using the Codenomicon HTTP Test Tool performed by the Apache Software Foundation security group and Red Hat uncovered an input validation issue in the IPv6 URI parsing routines in the apr-util library. If a remote attacker sent a request including a carefully crafted URI, an httpd child process could be made to crash. This issue is not believed to allow arbitrary code execution on Red Hat Enterprise Linux. This issue also does not represent a significant denial of service attack as requests will continue to be handled by other Apache child processes. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0786 to this issue. The Swedish IT Incident Centre (SITIC) reported a buffer overflow in the expansion of environment variables during configuration file parsing. This issue could allow a local user to gain
    last seen2020-06-01
    modified2020-06-02
    plugin id14736
    published2004-09-15
    reporterThis script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/14736
    titleRHEL 3 : httpd (RHSA-2004:463)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2004:463. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(14736);
      script_version ("1.28");
      script_cvs_date("Date: 2019/10/25 13:36:10");
    
      script_cve_id("CVE-2004-0747", "CVE-2004-0751", "CVE-2004-0786", "CVE-2004-0809");
      script_xref(name:"RHSA", value:"2004:463");
    
      script_name(english:"RHEL 3 : httpd (RHSA-2004:463)");
      script_summary(english:"Checks the rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Updated httpd packages that include fixes for security issues are now
    available.
    
    The Apache HTTP server is a powerful, full-featured, efficient, and
    freely-available Web server.
    
    Four issues have been discovered affecting releases of the Apache HTTP
    2.0 Server, up to and including version 2.0.50 :
    
    Testing using the Codenomicon HTTP Test Tool performed by the Apache
    Software Foundation security group and Red Hat uncovered an input
    validation issue in the IPv6 URI parsing routines in the apr-util
    library. If a remote attacker sent a request including a carefully
    crafted URI, an httpd child process could be made to crash. This issue
    is not believed to allow arbitrary code execution on Red Hat
    Enterprise Linux. This issue also does not represent a significant
    denial of service attack as requests will continue to be handled by
    other Apache child processes. The Common Vulnerabilities and Exposures
    project (cve.mitre.org) has assigned the name CVE-2004-0786 to this
    issue.
    
    The Swedish IT Incident Centre (SITIC) reported a buffer overflow in
    the expansion of environment variables during configuration file
    parsing. This issue could allow a local user to gain 'apache'
    privileges if an httpd process can be forced to parse a carefully
    crafted .htaccess file written by a local user. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
    name CVE-2004-0747 to this issue.
    
    An issue was discovered in the mod_ssl module which could be triggered
    if the server is configured to allow proxying to a remote SSL server.
    A malicious remote SSL server could force an httpd child process to
    crash by sending a carefully crafted response header. This issue is
    not believed to allow execution of arbitrary code. This issue also
    does not represent a significant Denial of Service attack as requests
    will continue to be handled by other Apache child processes. The
    Common Vulnerabilities and Exposures project (cve.mitre.org) has
    assigned the name CVE-2004-0751 to this issue.
    
    An issue was discovered in the mod_dav module which could be triggered
    for a location where WebDAV authoring access has been configured. A
    malicious remote client which is authorized to use the LOCK method
    could force an httpd child process to crash by sending a particular
    sequence of LOCK requests. This issue does not allow execution of
    arbitrary code. This issue also does not represent a significant
    Denial of Service attack as requests will continue to be handled by
    other Apache child processes. The Common Vulnerabilities and Exposures
    project (cve.mitre.org) has assigned the name CVE-2004-0809 to this
    issue.
    
    Users of the Apache HTTP server should upgrade to these updated
    packages, which contain backported patches that address these issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2004-0747"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2004-0751"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2004-0786"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2004-0809"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/errata/RHSA-2004:463"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected httpd, httpd-devel and / or mod_ssl packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      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:redhat:enterprise_linux:httpd");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:mod_ssl");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2004/09/16");
      script_set_attribute(attribute:"patch_publication_date", value:"2004/09/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/15");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Red Hat Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
    os_ver = os_ver[1];
    if (! preg(pattern:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 3.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    
    yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
    if (!empty_or_null(yum_updateinfo)) 
    {
      rhsa = "RHSA-2004:463";
      yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
      if (!empty_or_null(yum_report))
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_WARNING,
          extra      : yum_report 
        );
        exit(0);
      }
      else
      {
        audit_message = "affected by Red Hat security advisory " + rhsa;
        audit(AUDIT_OS_NOT, audit_message);
      }
    }
    else
    {
      flag = 0;
      if (rpm_check(release:"RHEL3", reference:"httpd-2.0.46-40.ent")) flag++;
      if (rpm_check(release:"RHEL3", reference:"httpd-devel-2.0.46-40.ent")) flag++;
      if (rpm_check(release:"RHEL3", reference:"mod_ssl-2.0.46-40.ent")) flag++;
    
      if (flag)
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_WARNING,
          extra      : rpm_report_get() + redhat_report_package_caveat()
        );
        exit(0);
      }
      else
      {
        tested = pkg_tests_get();
        if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
        else audit(AUDIT_PACKAGE_NOT_INSTALLED, "httpd / httpd-devel / mod_ssl");
      }
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2004-313.NASL
    description - Tue Sep 21 2004 Joe Orton <jorton at redhat.com> 2.0.51-2.7 - ap_rgetline_core fix from Rici Lake - Tue Sep 21 2004 Joe Orton <jorton at redhat.com> 2.0.51-2.6 - fix 2.0.51 regression in Satisfy merging (CVE-2004-0811) - Thu Sep 16 2004 Joe Orton <jorton at redhat.com> 2.0.51-2.5 - mod_ssl: prevent SIGHUP-triggers-SIGSEGV after upgrade from 2.0.50 - revert mod_ldap/mod_auth_ldap changes likewise - Wed Sep 15 2004 Joe Orton <jorton at redhat.com> 2.0.51-2.1 - update to 2.0.51, including security fixes for : - core: CVE-2004-0747 - mod_dav_fs: CVE-2004-0809 - mod_ssl: CVE-2004-0751, CVE-2004-0748 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 id14807
    published2004-09-24
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14807
    titleFedora Core 2 : httpd-2.0.51-2.7 (2004-313)
  • NASL familyMandriva Local Security Checks
    NASL idMANDRAKE_MDKSA-2004-096.NASL
    descriptionTwo Denial of Service conditions were discovered in the input filter of mod_ssl, the module that enables apache to handle HTTPS requests. Another vulnerability was discovered by the ASF security team using the Codenomicon HTTP Test Tool. This vulnerability, in the apr-util library, can possibly lead to arbitrary code execution if certain non-default conditions are met (enabling the AP_ENABLE_EXCEPTION_HOOK define). As well, the SITIC have discovered a buffer overflow when Apache expands environment variables in configuration files such as .htaccess and httpd.conf, which can lead to possible privilege escalation. This can only be done, however, if an attacker is able to place malicious configuration files on the server. Finally, a crash condition was discovered in the mod_dav module by Julian Reschke, where sending a LOCK refresh request to an indirectly locked resource could crash the server. The updated packages have been patched to protect against these vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id14752
    published2004-09-16
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14752
    titleMandrake Linux Security Advisory : apache2 (MDKSA-2004:096)
  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_SECUPD20041202.NASL
    descriptionThe remote host is missing Security Update 2004-12-02. This security update contains a number of fixes for the following programs : - Apache - Apache2 - AppKit - Cyrus IMAP - HIToolbox - Kerberos - Postfix - PSNormalizer - QuickTime Streaming Server - Safari - Terminal These programs contain multiple vulnerabilities that could allow a remote attacker to execute arbitrary code.
    last seen2020-06-01
    modified2020-06-02
    plugin id15898
    published2004-12-02
    reporterThis script is Copyright (C) 2004-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/15898
    titleMac OS X Multiple Vulnerabilities (Security Update 2004-12-02)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SA_2004_032.NASL
    descriptionThe remote host is missing the patch for the advisory SUSE-SA:2004:032 (apache2). The Apache daemon is running on most of the web-servers used in the Internet today. The Red Hat ASF Security-Team and the Swedish IT Incident Center within the National Post and Telecom Agency (SITIC) have found a bug in apache2 each. The first vulnerability appears in the apr_uri_parse() function while handling IPv6 addresses. The affected code passes a negative length argument to the memcpy() function. On BSD systems this can lead to remote command execution due to the nature of the memcpy() implementation. On Linux this bug will result in a remote denial-of-service condition. The second bug is a local buffer overflow that occurs while expanding ${ENVVAR} in the .htaccess and httpd.conf file. Both files are not writeable by normal user by default.
    last seen2020-06-01
    modified2020-06-02
    plugin id14731
    published2004-09-15
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14731
    titleSUSE-SA:2004:032: apache2

Oval

accepted2013-04-29T04:14:41.942-04:00
classvulnerability
contributors
  • nameAharon Chernin
    organizationSCAP.com, LLC
  • nameDragos Prisaca
    organizationG2, Inc.
definition_extensions
  • commentThe operating system installed on the system is Red Hat Enterprise Linux 3
    ovaloval:org.mitre.oval:def:11782
  • commentCentOS Linux 3.x
    ovaloval:org.mitre.oval:def:16651
descriptionBuffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.
familyunix
idoval:org.mitre.oval:def:11561
statusaccepted
submitted2010-07-09T03:56:16-04:00
titleBuffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.
version27

Redhat

advisories
rhsa
idRHSA-2004:463
rpms
  • httpd-0:2.0.46-40.ent
  • httpd-debuginfo-0:2.0.46-40.ent
  • httpd-devel-0:2.0.46-40.ent
  • mod_ssl-1:2.0.46-40.ent

Statements

contributorMark J Cox
lastmodified2008-07-02
organizationApache
statementFixed in Apache HTTP Server 2.0.51: http://httpd.apache.org/security/vulnerabilities_20.html

References