Vulnerabilities > CVE-2014-6053 - Data Processing Errors vulnerability in multiple products

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
libvncserver
canonical
debian
CWE-19
nessus

Summary

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.

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.
  • XML Nested Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By nesting XML data and causing this data to be continuously self-referential, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization. An attacker's goal is to leverage parser failure to his or her advantage. In most cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it may be possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.230.1].
  • XML Oversized Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By supplying oversized payloads in input vectors that will be processed by the XML parser, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization, and potentially cause execution of arbitrary code. An attacker's goal is to leverage parser failure to his or her advantage. In many cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it is possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.231.1].
  • XML Client-Side Attack
    Client applications such as web browsers that process HTML data often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.484.1]
  • XML Parser Attack
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.99.1]

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2014-11537.NASL
    descriptionVarious security fixes, including CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055 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 seen2020-03-17
    modified2014-09-29
    plugin id77942
    published2014-09-29
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/77942
    titleFedora 20 : libvncserver-0.9.10-0.6.20140718git9453be42.fc20 (2014-11537)
    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 2014-11537.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(77942);
      script_version("1.7");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2010-5304", "CVE-2014-6051", "CVE-2014-6052", "CVE-2014-6053", "CVE-2014-6054", "CVE-2014-6055");
      script_bugtraq_id(70091, 70092, 70093, 70094, 70096);
      script_xref(name:"FEDORA", value:"2014-11537");
    
      script_name(english:"Fedora 20 : libvncserver-0.9.10-0.6.20140718git9453be42.fc20 (2014-11537)");
      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:
    "Various security fixes, including CVE-2014-6051, CVE-2014-6052,
    CVE-2014-6053, CVE-2014-6054, CVE-2014-6055
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144287"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144288"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144289"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144291"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144293"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?50c71a32"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected libvncserver 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:ND");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libvncserver");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2014/09/26");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/29");
      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:"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 = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "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:"FC20", reference:"libvncserver-0.9.10-0.6.20140718git9453be42.fc20")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvncserver");
    }
    
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2014-229.NASL
    descriptionUpdated libvncserver packages fix security vulnerabilities : A malicious VNC server can trigger incorrect memory management handling by advertising a large screen size parameter to the VNC client. This would result in multiple memory corruptions and could allow remote code execution on the VNC client (CVE-2014-6051, CVE-2014-6052). A malicious VNC client can trigger multiple DoS conditions on the VNC server by advertising a large screen size, ClientCutText message length and/or a zero scaling factor parameter (CVE-2014-6053, CVE-2014-6054). A malicious VNC client can trigger multiple stack-based buffer overflows by passing a long file and directory names and/or attributes (FileTime) when using the file transfer message feature (CVE-2014-6055). Additionally libvncserver has been built against the new system minilzo library which is also being provided with this advisory.
    last seen2020-06-01
    modified2020-06-02
    plugin id79589
    published2014-11-27
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79589
    titleMandriva Linux Security Advisory : libvncserver (MDVSA-2014:229)
    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-2014:229. 
    # The text itself is copyright (C) Mandriva S.A.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(79589);
      script_version("1.4");
      script_cvs_date("Date: 2019/08/02 13:32:56");
    
      script_cve_id("CVE-2014-6051", "CVE-2014-6052", "CVE-2014-6053", "CVE-2014-6054", "CVE-2014-6055");
      script_bugtraq_id(70091, 70092, 70093, 70094, 70096);
      script_xref(name:"MDVSA", value:"2014:229");
    
      script_name(english:"Mandriva Linux Security Advisory : libvncserver (MDVSA-2014:229)");
      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 libvncserver packages fix security vulnerabilities :
    
    A malicious VNC server can trigger incorrect memory management
    handling by advertising a large screen size parameter to the VNC
    client. This would result in multiple memory corruptions and could
    allow remote code execution on the VNC client (CVE-2014-6051,
    CVE-2014-6052).
    
    A malicious VNC client can trigger multiple DoS conditions on the VNC
    server by advertising a large screen size, ClientCutText message
    length and/or a zero scaling factor parameter (CVE-2014-6053,
    CVE-2014-6054).
    
    A malicious VNC client can trigger multiple stack-based buffer
    overflows by passing a long file and directory names and/or attributes
    (FileTime) when using the file transfer message feature
    (CVE-2014-6055).
    
    Additionally libvncserver has been built against the new system
    minilzo library which is also being provided with this advisory."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://advisories.mageia.org/MGASA-2014-0397.html"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      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:ND");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64lzo-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64lzo2_2");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64minilzo0");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64vncserver-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64vncserver0");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:linuxvnc");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2014/11/26");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/27");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      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:"lib64lzo-devel-2.08-1.1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"lib64lzo2_2-2.08-1.1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"lib64minilzo0-2.08-1.1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"lib64vncserver-devel-0.9.9-1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"lib64vncserver0-0.9.9-1.mbs1")) flag++;
    if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"linuxvnc-0.9.9-1.mbs1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2014-11685.NASL
    descriptionVarious security fixes, including CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055 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 seen2020-03-17
    modified2014-10-01
    plugin id78000
    published2014-10-01
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/78000
    titleFedora 21 : libvncserver-0.9.10-0.6.20140718git9453be42.fc21 (2014-11685)
    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 2014-11685.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(78000);
      script_version("1.7");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2010-5304", "CVE-2014-6051", "CVE-2014-6052", "CVE-2014-6053", "CVE-2014-6054", "CVE-2014-6055");
      script_bugtraq_id(70091, 70092, 70093, 70094, 70096);
      script_xref(name:"FEDORA", value:"2014-11685");
    
      script_name(english:"Fedora 21 : libvncserver-0.9.10-0.6.20140718git9453be42.fc21 (2014-11685)");
      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:
    "Various security fixes, including CVE-2014-6051, CVE-2014-6052,
    CVE-2014-6053, CVE-2014-6054, CVE-2014-6055
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144287"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144288"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144289"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144291"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1144293"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?45f4d97a"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected libvncserver 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:ND");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libvncserver");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:21");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2014/09/27");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/01");
      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:"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 = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^21([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 21.x", "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:"FC21", reference:"libvncserver-0.9.10-0.6.20140718git9453be42.fc21")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvncserver");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2014-11541.NASL
    descriptionVarious security fixes, including CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055 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 seen2020-03-17
    modified2014-10-06
    plugin id78053
    published2014-10-06
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/78053
    titleFedora 19 : libvncserver-0.9.10-0.6.20140718git9453be42.fc19 (2014-11541)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2365-1.NASL
    descriptionNicolas Ruff discovered that LibVNCServer incorrectly handled memory when being advertised large screen sizes by the server. If a user were tricked into connecting to a malicious server, an attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2014-6051, CVE-2014-6052) Nicolas Ruff discovered that LibVNCServer incorrectly handled large ClientCutText messages. A remote attacker could use this issue to cause a server to crash, resulting in a denial of service. (CVE-2014-6053) Nicolas Ruff discovered that LibVNCServer incorrectly handled zero scaling factor values. A remote attacker could use this issue to cause a server to crash, resulting in a denial of service. (CVE-2014-6054) Nicolas Ruff discovered that LibVNCServer incorrectly handled memory in the file transfer feature. A remote attacker could use this issue to cause a server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-6055). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu 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 id77982
    published2014-09-30
    reporterUbuntu Security Notice (C) 2014-2019 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/77982
    titleUbuntu 12.04 LTS / 14.04 LTS : libvncserver vulnerabilities (USN-2365-1)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2014-1827.NASL
    descriptionFrom Red Hat Security Advisory 2014:1827 : Updated kdenetwork packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdenetwork packages contain networking applications for the K Desktop Environment (KDE). Krfb Desktop Sharing, which is a part of the kdenetwork package, is a server application that allows session sharing between users. Krfb uses the LibVNCServer library. A NULL pointer dereference flaw was found in the way LibVNCServer handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. (CVE-2014-6053) A divide-by-zero flaw was found in the way LibVNCServer handled the scaling factor when it was set to
    last seen2020-06-01
    modified2020-06-02
    plugin id79200
    published2014-11-12
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79200
    titleOracle Linux 7 : kdenetwork (ELSA-2014-1827)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-197.NASL
    descriptionSeveral vulnerabilities have been discovered in libvncserver, a library to implement VNC server functionality. These vulnerabilities might result in the execution of arbitrary code or denial of service in both the client and the server side. For the oldstable distribution (squeeze), these problems have been fixed in version 0.9.7-2+deb6u1. This update has been prepared by Nguyen Cong. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-17
    modified2015-04-15
    plugin id82784
    published2015-04-15
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/82784
    titleDebian DLA-197-1 : libvncserver security update
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_CB3F036D8C7F11E6924A60A44CE6887B.NASL
    descriptionNicolas Ruff reports : Integer overflow in MallocFrameBuffer() on client side. Lack of malloc() return value checking on client side. Server crash on a very large ClientCutText message. Server crash when scaling factor is set to zero. Multiple stack overflows in File Transfer feature.
    last seen2020-06-01
    modified2020-06-02
    plugin id93990
    published2016-10-12
    reporterThis script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93990
    titleFreeBSD : libvncserver -- multiple security vulnerabilities (cb3f036d-8c7f-11e6-924a-60a44ce6887b)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2014-1827.NASL
    descriptionUpdated kdenetwork packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdenetwork packages contain networking applications for the K Desktop Environment (KDE). Krfb Desktop Sharing, which is a part of the kdenetwork package, is a server application that allows session sharing between users. Krfb uses the LibVNCServer library. A NULL pointer dereference flaw was found in the way LibVNCServer handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. (CVE-2014-6053) A divide-by-zero flaw was found in the way LibVNCServer handled the scaling factor when it was set to
    last seen2020-06-01
    modified2020-06-02
    plugin id79219
    published2014-11-13
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79219
    titleCentOS 7 : kdenetwork (CESA-2014:1827)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2014.NASL
    descriptionSeveral vulnerabilities have been identified in the VNC code of vino, a desktop sharing utility for the GNOME desktop environment. The vulnerabilities referenced below are issues that have originally been reported against Debian source package libvncserver. The vino source package in Debian ships a custom-patched and stripped down variant of libvncserver, thus some of libvncserver
    last seen2020-06-01
    modified2020-06-02
    plugin id131432
    published2019-12-03
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131432
    titleDebian DLA-2014-1 : vino security update
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2014-11464.NASL
    descriptionsecurity fix, unbundles libvncserver and uses the system libvncserver. 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 seen2020-03-17
    modified2014-10-09
    plugin id78095
    published2014-10-09
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/78095
    titleFedora 19 : krfb-4.11.5-4.fc19 (2014-11464)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2015-851.NASL
    descriptionThe LibVNCServer package was updated to fix the following security issues : - bsc#897031: fix several security issues : - CVE-2014-6051: Integer overflow in MallocFrameBuffer() on client side. - CVE-2014-6052: Lack of malloc() return value checking on client side. - CVE-2014-6053: Server crash on a very large ClientCutText message. - CVE-2014-6054: Server crash when scaling factor is set to zero. - CVE-2014-6055: Multiple stack overflows in File Transfer feature. - bsc#854151: Restrict the SSL cipher suite.
    last seen2020-06-05
    modified2015-12-16
    plugin id87389
    published2015-12-16
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/87389
    titleopenSUSE Security Update : LibVNCServer (openSUSE-2015-851)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2014-1826.NASL
    descriptionFrom Red Hat Security Advisory 2014:1826 : Updated libvncserver packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. LibVNCServer is a library that allows for easy creation of VNC server or client functionality. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way screen sizes were handled by LibVNCServer. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code in the client. (CVE-2014-6051) A NULL pointer dereference flaw was found in LibVNCServer
    last seen2020-06-01
    modified2020-06-02
    plugin id79199
    published2014-11-12
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79199
    titleOracle Linux 6 / 7 : libvncserver (ELSA-2014-1826)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-1827.NASL
    descriptionUpdated kdenetwork packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kdenetwork packages contain networking applications for the K Desktop Environment (KDE). Krfb Desktop Sharing, which is a part of the kdenetwork package, is a server application that allows session sharing between users. Krfb uses the LibVNCServer library. A NULL pointer dereference flaw was found in the way LibVNCServer handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. (CVE-2014-6053) A divide-by-zero flaw was found in the way LibVNCServer handled the scaling factor when it was set to
    last seen2020-06-01
    modified2020-06-02
    plugin id79203
    published2014-11-12
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79203
    titleRHEL 7 : kdenetwork (RHSA-2014:1827)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2015-2088-1.NASL
    descriptionThe LibVNCServer package was updated to fix the following security issues : - bsc#897031: fix several security issues : - CVE-2014-6051: Integer overflow in MallocFrameBuffer() on client side. - CVE-2014-6052: Lack of malloc() return value checking on client side. - CVE-2014-6053: Server crash on a very large ClientCutText message. - CVE-2014-6054: Server crash when scaling factor is set to zero. - CVE-2014-6055: Multiple stack overflows in File Transfer feature. - bsc#854151: Restrict the SSL cipher suite. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE 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 id87064
    published2015-11-25
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87064
    titleSUSE SLED12 / SLES12 Security Update : LibVNCServer (SUSE-SU-2015:2088-1)
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2015-146.NASL
    descriptionUpdated libvncserver packages fix security vulnerabilities : An integer overflow in liblzo before 2.07 allows attackers to cause a denial of service or possibly code execution in applications using performing LZO decompression on a compressed payload from the attacker (CVE-2014-4607). The libvncserver library is built with a bundled copy of minilzo, which is a part of liblzo containing the vulnerable code. A malicious VNC server can trigger incorrect memory management handling by advertising a large screen size parameter to the VNC client. This would result in multiple memory corruptions and could allow remote code execution on the VNC client (CVE-2014-6051, CVE-2014-6052). A malicious VNC client can trigger multiple DoS conditions on the VNC server by advertising a large screen size, ClientCutText message length and/or a zero scaling factor parameter (CVE-2014-6053, CVE-2014-6054). A malicious VNC client can trigger multiple stack-based buffer overflows by passing a long file and directory names and/or attributes (FileTime) when using the file transfer message feature (CVE-2014-6055).
    last seen2020-06-01
    modified2020-06-02
    plugin id82399
    published2015-03-30
    reporterThis script is Copyright (C) 2015-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/82399
    titleMandriva Linux Security Advisory : libvncserver (MDVSA-2015:146)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201507-07.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201507-07 (LibVNCServer: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in LibVNCServer. Please review the CVE identifiers referenced below for details. Impact : A remote attacker may be able to execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id84606
    published2015-07-08
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/84606
    titleGLSA-201507-07 : LibVNCServer: Multiple vulnerabilities
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20141111_KDENETWORK_ON_SL7_X.NASL
    descriptionA NULL pointer dereference flaw was found in the way LibVNCServer handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. (CVE-2014-6053) A divide-by-zero flaw was found in the way LibVNCServer handled the scaling factor when it was set to
    last seen2020-03-18
    modified2014-11-13
    plugin id79229
    published2014-11-13
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79229
    titleScientific Linux Security Update : kdenetwork on SL7.x x86_64 (20141111)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2045.NASL
    descriptionSeveral vulnerabilities have recently been discovered in TightVNC 1.x, an X11 based VNC server/viewer application for Windows and Unix. CVE-2014-6053 The rfbProcessClientNormalMessage function in rfbserver.c in TightVNC server did not properly handle attempts to send a large amount of ClientCutText data, which allowed remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that was processed by using a single unchecked malloc. CVE-2018-7225 rfbProcessClientNormalMessage() in rfbserver.c did not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets. CVE-2019-8287 TightVNC code contained global buffer overflow in HandleCoRREBBP macro function, which could potentially have result in code execution. This attack appeared to be exploitable via network connectivity. (aka CVE-2018-20020/libvncserver) CVE-2018-20021 TightVNC in vncviewer/rfbproto.c contained a CWE-835: Infinite loop vulnerability. The vulnerability allowed an attacker to consume an excessive amount of resources like CPU and RAM. CVE-2018-20022 TightVNC
    last seen2020-06-01
    modified2020-06-02
    plugin id132345
    published2019-12-23
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132345
    titleDebian DLA-2045-1 : tightvnc security update
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-1826.NASL
    descriptionUpdated libvncserver packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. LibVNCServer is a library that allows for easy creation of VNC server or client functionality. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way screen sizes were handled by LibVNCServer. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code in the client. (CVE-2014-6051) A NULL pointer dereference flaw was found in LibVNCServer
    last seen2020-06-01
    modified2020-06-02
    plugin id79202
    published2014-11-12
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79202
    titleRHEL 6 / 7 : libvncserver (RHSA-2014:1826)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20141111_LIBVNCSERVER_ON_SL6_X.NASL
    descriptionAn integer overflow flaw, leading to a heap-based buffer overflow, was found in the way screen sizes were handled by LibVNCServer. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code in the client. (CVE-2014-6051) A NULL pointer dereference flaw was found in LibVNCServer
    last seen2020-03-18
    modified2014-11-13
    plugin id79230
    published2014-11-13
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79230
    titleScientific Linux Security Update : libvncserver on SL6.x, SL7.x i386/x86_64 (20141111)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3081.NASL
    descriptionSeveral vulnerabilities have been discovered in libvncserver, a library to implement VNC server functionality. These vulnerabilities might result in the execution of arbitrary code or denial of service in both the client and the server side.
    last seen2020-03-17
    modified2014-12-01
    plugin id79629
    published2014-12-01
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79629
    titleDebian DSA-3081-1 : libvncserver - security update
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2014-1826.NASL
    descriptionUpdated libvncserver packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. LibVNCServer is a library that allows for easy creation of VNC server or client functionality. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way screen sizes were handled by LibVNCServer. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code in the client. (CVE-2014-6051) A NULL pointer dereference flaw was found in LibVNCServer
    last seen2020-06-01
    modified2020-06-02
    plugin id79188
    published2014-11-12
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79188
    titleCentOS 6 / 7 : libvncserver (CESA-2014:1826)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2015-2110-1.NASL
    descriptionThe libvncserver package was updated to fix the following security issues : - bsc#897031: fix several security issues : - CVE-2014-6051: Integer overflow in MallocFrameBuffer() on client side. - CVE-2014-6052: Lack of malloc() return value checking on client side. - CVE-2014-6053: Server crash on a very large ClientCutText message. - CVE-2014-6054: Server crash when scaling factor is set to zero. - CVE-2014-6055: Multiple stack overflows in File Transfer feature. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE 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 id87105
    published2015-11-30
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87105
    titleSUSE SLED11 / SLES11 Security Update : LibVNCServer (SUSE-SU-2015:2110-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1979.NASL
    descriptionSeveral vulnerabilities have been identified in the VNC code of iTALC, a classroom management software. All vulnerabilities referenced below are issues that have originally been reported against Debian source package libvncserver. The italc source package in Debian ships a custom-patched version of libvncserver, thus libvncserver
    last seen2020-06-01
    modified2020-06-02
    plugin id130408
    published2019-10-31
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130408
    titleDebian DLA-1979-1 : italc security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2015-2088-2.NASL
    descriptionThe LibVNCServer package was updated to fix the following security issues : - bsc#897031: fix several security issues : - CVE-2014-6051: Integer overflow in MallocFrameBuffer() on client side. - CVE-2014-6052: Lack of malloc() return value checking on client side. - CVE-2014-6053: Server crash on a very large ClientCutText message. - CVE-2014-6054: Server crash when scaling factor is set to zero. - CVE-2014-6055: Multiple stack overflows in File Transfer feature. - bsc#854151: Restrict the SSL cipher suite. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE 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 id87721
    published2016-01-04
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87721
    titleSUSE SLES12 Security Update : LibVNCServer (SUSE-SU-2015:2088-2)

Redhat

rpms
  • libvncserver-0:0.9.7-7.el6_6.1
  • libvncserver-0:0.9.9-9.el7_0.1
  • libvncserver-debuginfo-0:0.9.7-7.el6_6.1
  • libvncserver-debuginfo-0:0.9.9-9.el7_0.1
  • libvncserver-devel-0:0.9.7-7.el6_6.1
  • libvncserver-devel-0:0.9.9-9.el7_0.1
  • kdenetwork-7:4.10.5-8.el7_0
  • kdenetwork-common-7:4.10.5-8.el7_0
  • kdenetwork-debuginfo-7:4.10.5-8.el7_0
  • kdenetwork-devel-7:4.10.5-8.el7_0
  • kdenetwork-fileshare-samba-7:4.10.5-8.el7_0
  • kdenetwork-kdnssd-7:4.10.5-8.el7_0
  • kdenetwork-kget-7:4.10.5-8.el7_0
  • kdenetwork-kget-libs-7:4.10.5-8.el7_0
  • kdenetwork-kopete-7:4.10.5-8.el7_0
  • kdenetwork-kopete-devel-7:4.10.5-8.el7_0
  • kdenetwork-kopete-libs-7:4.10.5-8.el7_0
  • kdenetwork-krdc-7:4.10.5-8.el7_0
  • kdenetwork-krdc-devel-7:4.10.5-8.el7_0
  • kdenetwork-krdc-libs-7:4.10.5-8.el7_0
  • kdenetwork-krfb-7:4.10.5-8.el7_0
  • kdenetwork-krfb-libs-7:4.10.5-8.el7_0