Vulnerabilities > CVE-2012-6097 - Information Exposure vulnerability in Fedorahosted Cronie 1.4.8

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
fedorahosted
CWE-200
nessus

Summary

File descriptor leak in cronie 1.4.8, when running in certain environments, might allow local users to read restricted files, as demonstrated by reading /etc/crontab.

Vulnerable Configurations

Part Description Count
Application
Fedorahosted
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2013-033.NASL
    descriptionUpdated cronie package fixes the following issue : It was reported that cronie 1.4.8 would leak certain file descriptors. On systems where /etc/crontab is not world-readable this could be an information disclosure concern (CVE-2012-6097).
    last seen2020-06-01
    modified2020-06-02
    plugin id66047
    published2013-04-20
    reporterThis script is Copyright (C) 2013-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/66047
    titleMandriva Linux Security Advisory : cronie (MDVSA-2013:033)
    code
    #%NASL_MIN_LEVEL 80502
    
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Mandriva Linux Security Advisory MDVSA-2013:033. 
    # The text itself is copyright (C) Mandriva S.A.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(66047);
      script_version("1.5");
      script_cvs_date("Date: 2019/08/02 13:32:55");
    
      script_cve_id("CVE-2012-6097");
      script_bugtraq_id(57191);
      script_xref(name:"MDVSA", value:"2013:033");
      script_xref(name:"MGASA", value:"2013-0023");
    
      script_name(english:"Mandriva Linux Security Advisory : cronie (MDVSA-2013:033)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Mandriva Linux host is missing one or more security
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Updated cronie package fixes the following issue :
    
    It was reported that cronie 1.4.8 would leak certain file descriptors.
    On systems where /etc/crontab is not world-readable this could be an
    information disclosure concern (CVE-2012-6097)."
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected cronie and / or cronie-anacron packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
      script_set_cvss_temporal_vector("CVSS2#E:F/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:mandriva:linux:cronie");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:cronie-anacron");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2013/04/05");
      script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/20");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2013-2019 Tenable Network Security, Inc.");
      script_family(english:"Mandriva Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/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);
    if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
    if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"cronie-1.4.8-6.1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"cronie-anacron-1.4.8-6.1.mbs1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2013-52.NASL
    description - Fix Bug 786096 - cron: does not close file descriptors before invocation of commands - bug-786096_cronie-fdleak.diff (CVE-2012-6097)
    last seen2020-06-05
    modified2014-06-13
    plugin id75057
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75057
    titleopenSUSE Security Update : cronie (openSUSE-SU-2013:0205-1)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from openSUSE Security Update openSUSE-2013-52.
    #
    # The text description of this plugin is (C) SUSE LLC.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(75057);
      script_version("1.3");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2012-6097");
    
      script_name(english:"openSUSE Security Update : cronie (openSUSE-SU-2013:0205-1)");
      script_summary(english:"Check for the openSUSE-2013-52 patch");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote openSUSE host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "  - Fix Bug 786096 - cron: does not close file descriptors
        before invocation of commands -
        bug-786096_cronie-fdleak.diff (CVE-2012-6097)"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.novell.com/show_bug.cgi?id=786096"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://lists.opensuse.org/opensuse-updates/2013-01/msg00087.html"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected cronie packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cron");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cronie");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cronie-anacron");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cronie-anacron-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cronie-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cronie-debugsource");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.2");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2013/01/21");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");
    
      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/SuSE/release");
    if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
    if (release !~ "^(SUSE12\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.2", release);
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    ourarch = get_kb_item("Host/cpu");
    if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
    if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
    
    flag = 0;
    
    if ( rpm_check(release:"SUSE12.2", reference:"cron-4.2-37.5.1") ) flag++;
    if ( rpm_check(release:"SUSE12.2", reference:"cronie-1.4.8-37.5.1") ) flag++;
    if ( rpm_check(release:"SUSE12.2", reference:"cronie-anacron-1.4.8-37.5.1") ) flag++;
    if ( rpm_check(release:"SUSE12.2", reference:"cronie-anacron-debuginfo-1.4.8-37.5.1") ) flag++;
    if ( rpm_check(release:"SUSE12.2", reference:"cronie-debuginfo-1.4.8-37.5.1") ) flag++;
    if ( rpm_check(release:"SUSE12.2", reference:"cronie-debugsource-1.4.8-37.5.1") ) 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, "cron / cronie / cronie-anacron / cronie-anacron-debuginfo / etc");
    }