Vulnerabilities > CVE-2005-1123 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Monkey-Project Monkey

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
monkey-project
CWE-119
nessus

Summary

Monkey daemon (monkeyd) before 0.9.1 allows remote attackers to cause a denial of service (memory corruption) via a request for a zero byte file.

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 familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-200504-14.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-200504-14 (monkeyd: Multiple vulnerabilities) Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a double expansion error in monkeyd, resulting in a format string vulnerability. Ciaran McCreesh of Gentoo Linux discovered a Denial of Service vulnerability, a syntax error caused monkeyd to zero out unallocated memory should a zero byte file be requested. Impact : The format string vulnerability could allow an attacker to send a specially crafted request to the monkeyd server, resulting in the execution of arbitrary code with the permissions of the user running monkeyd. The DoS vulnerability could allow an attacker to disrupt the operation of the web server, should a zero byte file be accessible. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id18061
    published2005-04-16
    reporterThis script is Copyright (C) 2005-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/18061
    titleGLSA-200504-14 : monkeyd: 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 200504-14.
    #
    # The advisory text is Copyright (C) 2001-2015 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(18061);
      script_version("1.14");
      script_cvs_date("Date: 2019/08/02 13:32:42");
    
      script_cve_id("CVE-2005-1122", "CVE-2005-1123");
      script_xref(name:"GLSA", value:"200504-14");
    
      script_name(english:"GLSA-200504-14 : monkeyd: 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-200504-14
    (monkeyd: Multiple vulnerabilities)
    
        Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a
        double expansion error in monkeyd, resulting in a format string
        vulnerability. Ciaran McCreesh of Gentoo Linux discovered a Denial of
        Service vulnerability, a syntax error caused monkeyd to zero out
        unallocated memory should a zero byte file be requested.
      
    Impact :
    
        The format string vulnerability could allow an attacker to send a
        specially crafted request to the monkeyd server, resulting in the
        execution of arbitrary code with the permissions of the user running
        monkeyd. The DoS vulnerability could allow an attacker to disrupt the
        operation of the web server, should a zero byte file be accessible.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/200504-14"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All monkeyd users should upgrade to the latest version:
        # emerge --sync
        # emerge --ask --oneshot --verbose '>=www-servers/monkeyd-0.9.1'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/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:gentoo:linux:monkeyd");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2005/04/15");
      script_set_attribute(attribute:"plugin_publication_date", value:"2005/04/16");
      script_set_attribute(attribute:"vuln_publication_date", value:"2005/04/15");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2005-2019 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:"www-servers/monkeyd", unaffected:make_list("ge 0.9.1"), vulnerable:make_list("lt 0.9.1"))) 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, "monkeyd");
    }
    
  • NASL familyCGI abuses
    NASL idMONKEYD_091.NASL
    descriptionThe version of the Monkey HTTP Server installed on the remote host suffers from the following flaws : - A Format String Vulnerability A remote attacker may be able to execute arbitrary code with the permissions of the user running monkeyd by sending a specially- crafted request. - A Denial of Service Vulnerability Repeatedly requesting a zero-byte length file, if one exists, could cause the web server to crash.
    last seen2020-06-01
    modified2020-06-02
    plugin id18059
    published2005-04-15
    reporterThis script is Copyright (C) 2005-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/18059
    titleMonkey HTTP Daemon (monkeyd) < 0.9.1 Multiple Vulnerabilities