Vulnerabilities > CVE-2018-7866 - NULL Pointer Dereference vulnerability in multiple products

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
libming
debian
CWE-476
nessus

Summary

A NULL pointer dereference was discovered in newVar3 in util/decompile.c in libming 0.4.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service.

Vulnerable Configurations

Part Description Count
Application
Libming
1
OS
Debian
1

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2019-5139453028.NASL
    descriptionBackport security fixes from [PR#145](https://github.com/libming/libming/pull/145) Fixes: CVE-2018-7866, CVE-2018-7873, CVE-2018-7876, CVE-2018-9009, CVE-2018-9132 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. 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 id129831
    published2019-10-14
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129831
    titleFedora 30 : ming (2019-5139453028)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2019-5139453028.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(129831);
      script_version("1.2");
      script_cvs_date("Date: 2019/12/19");
    
      script_cve_id("CVE-2018-7866", "CVE-2018-7873", "CVE-2018-7876", "CVE-2018-9009", "CVE-2018-9132");
      script_xref(name:"FEDORA", value:"2019-5139453028");
    
      script_name(english:"Fedora 30 : ming (2019-5139453028)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Backport security fixes from
    [PR#145](https://github.com/libming/libming/pull/145)
    
    Fixes: CVE-2018-7866, CVE-2018-7873, CVE-2018-7876, CVE-2018-9009,
    CVE-2018-9132
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora update system website.
    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://bodhi.fedoraproject.org/updates/FEDORA-2019-5139453028"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected ming package.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:ming");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:30");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/08");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/10/12");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/14");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! preg(pattern:"^30([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 30", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"FC30", reference:"ming-0.4.9-0.2.20181112git5009802.fc30")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ming");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2019-03AA4F746C.NASL
    descriptionBackport security fixes from [PR#145](https://github.com/libming/libming/pull/145) Fixes: CVE-2018-7866, CVE-2018-7873, CVE-2018-7876, CVE-2018-9009, CVE-2018-9132 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. 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 id129829
    published2019-10-14
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/129829
    titleFedora 29 : ming (2019-03aa4f746c)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1386.NASL
    descriptionMultiple vulnerabilities have been discovered in Ming : CVE-2018-7866 NULL pointer dereference in the newVar3 function (util/decompile.c). Remote attackers might leverage this vulnerability to cause a denial of service via a crafted swf file. CVE-2018-7873 Heap-based buffer overflow vulnerability in the getString function (util/decompile.c). Remote attackers might leverage this vulnerability to cause a denial of service via a crafted swf file. CVE-2018-7876 Integer overflow and resulting memory exhaustion in the parseSWF_ACTIONRECORD function (util/parser.c). Remote attackers might leverage this vulnerability to cause a denial of service via a crafted swf file. CVE-2018-9009 Various heap-based buffer overflow vulnerabilites in util/decompiler.c. Remote attackers might leverage this vulnerability to cause a denial of service via a crafted swf file. CVE-2018-9132 NULL pointer dereference in the getInt function (util/decompile.c). Remote attackers might leverage this vulnerability to cause a denial of service via a crafted swf file. For Debian 7
    last seen2020-03-17
    modified2018-05-29
    plugin id110162
    published2018-05-29
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110162
    titleDebian DLA-1386-1 : ming security update