Vulnerabilities > CVE-2018-6836 - Release of Invalid Pointer or Reference vulnerability in Wireshark

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
wireshark
CWE-763
critical
nessus

Summary

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

Vulnerable Configurations

Part Description Count
Application
Wireshark
212

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-CDF3F8E8B0.NASL
    descriptionRemoving dependency on wireshark metapackage from wireshark-cli ---- Added wireshark-qt to wireshark metapackage ---- - New version 2.4.5 - Contains fixes for CVE-2018-7419, CVE-2018-7418, CVE-2018-7417, CVE-2018-7420, CVE-2018-7320, CVE-2018-7336, CVE-2018-7337, CVE-2018-7334, CVE-2018-7335, CVE-2018-6836, CVE-2018-5335, CVE-2018-5334, CVE-2017-6014, CVE-2017-9616, CVE-2017-9617, CVE-2017-9766 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 seen2020-06-05
    modified2018-03-28
    plugin id108674
    published2018-03-28
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108674
    titleFedora 27 : 1:wireshark (2018-cdf3f8e8b0)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2018-cdf3f8e8b0.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(108674);
      script_version("1.6");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-17997", "CVE-2017-6014", "CVE-2017-9616", "CVE-2017-9617", "CVE-2017-9766", "CVE-2018-5334", "CVE-2018-5335", "CVE-2018-6836", "CVE-2018-7320", "CVE-2018-7334", "CVE-2018-7335", "CVE-2018-7336", "CVE-2018-7337", "CVE-2018-7417", "CVE-2018-7418", "CVE-2018-7419", "CVE-2018-7420");
      script_xref(name:"FEDORA", value:"2018-cdf3f8e8b0");
    
      script_name(english:"Fedora 27 : 1:wireshark (2018-cdf3f8e8b0)");
      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:
    "Removing dependency on wireshark metapackage from wireshark-cli
    
    ----
    
    Added wireshark-qt to wireshark metapackage
    
    ----
    
      - New version 2.4.5
    
      - Contains fixes for CVE-2018-7419, CVE-2018-7418,
        CVE-2018-7417, CVE-2018-7420, CVE-2018-7320,
        CVE-2018-7336, CVE-2018-7337, CVE-2018-7334,
        CVE-2018-7335, CVE-2018-6836, CVE-2018-5335,
        CVE-2018-5334, CVE-2017-6014, CVE-2017-9616,
        CVE-2017-9617, CVE-2017-9766
    
    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-2018-cdf3f8e8b0"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected 1:wireshark package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/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:fedoraproject:fedora:1:wireshark");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:27");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/03/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/28");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2020 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:"^27([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 27", "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:"FC27", reference:"wireshark-2.4.5-3.fc27", epoch:"1")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        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, "1:wireshark");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-BFDAD62CD6.NASL
    descriptionRemoving dependency on wireshark metapackage from wireshark-cli ---- Added wireshark-qt to wireshark metapackage ---- - New version 2.4.5 - Contains fixes for CVE-2018-7419, CVE-2018-7418, CVE-2018-7417, CVE-2018-7420, CVE-2018-7320, CVE-2018-7336, CVE-2018-7337, CVE-2018-7334, CVE-2018-7335, CVE-2018-6836, CVE-2018-5335, CVE-2018-5334, CVE-2017-6014, CVE-2017-9616, CVE-2017-9617, CVE-2017-9766 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 seen2020-06-05
    modified2019-01-03
    plugin id120757
    published2019-01-03
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120757
    titleFedora 28 : 1:wireshark (2018-bfdad62cd6)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2018-bfdad62cd6.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(120757);
      script_version("1.5");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-17997", "CVE-2017-6014", "CVE-2017-9616", "CVE-2017-9617", "CVE-2017-9766", "CVE-2018-5334", "CVE-2018-5335", "CVE-2018-6836", "CVE-2018-7320", "CVE-2018-7334", "CVE-2018-7335", "CVE-2018-7336", "CVE-2018-7337", "CVE-2018-7417", "CVE-2018-7418", "CVE-2018-7419", "CVE-2018-7420");
      script_xref(name:"FEDORA", value:"2018-bfdad62cd6");
    
      script_name(english:"Fedora 28 : 1:wireshark (2018-bfdad62cd6)");
      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:
    "Removing dependency on wireshark metapackage from wireshark-cli
    
    ----
    
    Added wireshark-qt to wireshark metapackage
    
    ----
    
      - New version 2.4.5
    
      - Contains fixes for CVE-2018-7419, CVE-2018-7418,
        CVE-2018-7417, CVE-2018-7420, CVE-2018-7320,
        CVE-2018-7336, CVE-2018-7337, CVE-2018-7334,
        CVE-2018-7335, CVE-2018-6836, CVE-2018-5335,
        CVE-2018-5334, CVE-2017-6014, CVE-2017-9616,
        CVE-2017-9617, CVE-2017-9766
    
    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-2018-bfdad62cd6"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected 1:wireshark package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/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:"cvss_score_source", value:"CVE-2018-6836");
      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:1:wireshark");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/04/17");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/03");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2019-2020 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:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "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:"FC28", reference:"wireshark-2.4.5-3.fc28", epoch:"1")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        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, "1:wireshark");
    }