Vulnerabilities > CVE-2011-1756 - Resource Management Errors vulnerability in Citadel

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
citadel
CWE-399
nessus

Summary

modules/xmpp/serv_xmpp.c in Citadel 7.86 and earlier does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-0882.NASL
    descriptionAn updated jabberd package that fixes one security issue is now available for Red Hat Network Satellite 5.4.1 for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. This package provides jabberd 2, an Extensible Messaging and Presence Protocol (XMPP) server used for XML based communication. It was found that the jabberd daemon did not properly detect recursion during entity expansion. A remote attacker could provide a specially crafted XML file containing a large number of nested entity references, which once processed by the jabberd daemon, could lead to a denial of service (excessive memory and CPU consumption). (CVE-2011-1755) Red Hat would like to thank Nico Golde of the Debian Security Team for reporting this issue. The Debian Security Team acknowledges Wouter Coekaerts as the original reporter. Users of Red Hat Network Satellite 5.4.1 are advised to upgrade to this updated jabberd package, which resolves this issue. For this update to take effect, Red Hat Network Satellite must be restarted. Refer to the Solution section for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id63985
    published2013-01-24
    reporterThis script is Copyright (C) 2013-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/63985
    titleRHEL 5 : jabberd (RHSA-2011:0882)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2011:0882. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    if (NASL_LEVEL < 3000) exit(0);
    
    include("compat.inc");
    
    if (description)
    {
      script_id(63985);
      script_version("1.10");
      script_cvs_date("Date: 2019/10/25 13:36:16");
    
      script_cve_id("CVE-2003-1564", "CVE-2011-1753", "CVE-2011-1754", "CVE-2011-1755", "CVE-2011-1756", "CVE-2011-1757", "CVE-2011-2188");
      script_bugtraq_id(48250);
      script_xref(name:"RHSA", value:"2011:0882");
    
      script_name(english:"RHEL 5 : jabberd (RHSA-2011:0882)");
      script_summary(english:"Checks rpm output for the updated package");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "An updated jabberd package that fixes one security issue is now
    available for Red Hat Network Satellite 5.4.1 for Red Hat Enterprise
    Linux 5.
    
    The Red Hat Security Response Team has rated this update as having low
    security impact. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available from the
    CVE link in the References section.
    
    This package provides jabberd 2, an Extensible Messaging and Presence
    Protocol (XMPP) server used for XML based communication.
    
    It was found that the jabberd daemon did not properly detect recursion
    during entity expansion. A remote attacker could provide a
    specially crafted XML file containing a large number of nested entity
    references, which once processed by the jabberd daemon, could lead to
    a denial of service (excessive memory and CPU consumption).
    (CVE-2011-1755)
    
    Red Hat would like to thank Nico Golde of the Debian Security Team for
    reporting this issue. The Debian Security Team acknowledges Wouter
    Coekaerts as the original reporter.
    
    Users of Red Hat Network Satellite 5.4.1 are advised to upgrade to
    this updated jabberd package, which resolves this issue. For this
    update to take effect, Red Hat Network Satellite must be restarted.
    Refer to the Solution section for details."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.redhat.com/security/data/cve/CVE-2011-1755.html"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://rhn.redhat.com/errata/RHSA-2011-0882.html"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected jabberd package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(189);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jabberd");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2011/06/16");
      script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/24");
      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:"Red Hat 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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    
    flag = 0;
    if (rpm_check(release:"RHEL5", cpu:"i386", reference:"jabberd-2.2.8-12.el5sat")) flag++;
    if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"jabberd-2.2.8-12.el5sat")) flag++;
    if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"jabberd-2.2.8-12.el5sat")) 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 familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2250.NASL
    descriptionWouter Coekaerts discovered that the Jabber server component of Citadel, a complete and feature-rich groupware server, is vulnerable to the so-called
    last seen2020-03-17
    modified2011-06-10
    plugin id55038
    published2011-06-10
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55038
    titleDebian DSA-2250-1 : citadel - denial of service
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Debian Security Advisory DSA-2250. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(55038);
      script_version("1.10");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");
    
      script_cve_id("CVE-2011-1756");
      script_xref(name:"DSA", value:"2250");
    
      script_name(english:"Debian DSA-2250-1 : citadel - denial of service");
      script_summary(english:"Checks dpkg output for the updated package");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Debian host is missing a security-related update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Wouter Coekaerts discovered that the Jabber server component of
    Citadel, a complete and feature-rich groupware server, is vulnerable
    to the so-called'billion laughs' attack because it does not prevent
    entity expansion on received data. This allows an attacker to perform
    denial of service attacks against the service by sending specially
    crafted XML data to it."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/squeeze/citadel"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2011/dsa-2250"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the citadel packages.
    
    For the oldstable distribution (lenny), this problem has been fixed in
    version 7.37-8+lenny1.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 7.83-2squeeze2."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:citadel");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2011/03/31");
      script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/10");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Debian Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("debian_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
    if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    if (deb_check(release:"5.0", prefix:"citadel", reference:"7.37-8+lenny1")) flag++;
    if (deb_check(release:"6.0", prefix:"citadel-client", reference:"7.83-2squeeze2")) flag++;
    if (deb_check(release:"6.0", prefix:"citadel-dbg", reference:"7.83-2squeeze2")) flag++;
    if (deb_check(release:"6.0", prefix:"citadel-doc", reference:"7.83-2squeeze2")) flag++;
    if (deb_check(release:"6.0", prefix:"citadel-mta", reference:"7.83-2squeeze2")) flag++;
    if (deb_check(release:"6.0", prefix:"citadel-server", reference:"7.83-2squeeze2")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-0881.NASL
    descriptionAn updated jabberd package that fixes one security issue is now available for Red Hat Network Proxy 5.4.1 for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. This package provides jabberd 2, an Extensible Messaging and Presence Protocol (XMPP) server used for XML based communication. It was found that the jabberd daemon did not properly detect recursion during entity expansion. A remote attacker could provide a specially crafted XML file containing a large number of nested entity references, which once processed by the jabberd daemon, could lead to a denial of service (excessive memory and CPU consumption). (CVE-2011-1755) Red Hat would like to thank Nico Golde of the Debian Security Team for reporting this issue. The Debian Security Team acknowledges Wouter Coekaerts as the original reporter. Users of Red Hat Network Proxy 5.4.1 are advised to upgrade to this updated jabberd package, which resolves this issue. For this update to take effect, Red Hat Network Proxy must be restarted. Refer to the Solution section for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id63984
    published2013-01-24
    reporterThis script is Copyright (C) 2013-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/63984
    titleRHEL 5 : jabberd (RHSA-2011:0881)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2011:0881. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    if (NASL_LEVEL < 3000) exit(0);
    
    include("compat.inc");
    
    if (description)
    {
      script_id(63984);
      script_version("1.10");
      script_cvs_date("Date: 2019/10/25 13:36:16");
    
      script_cve_id("CVE-2003-1564", "CVE-2011-1753", "CVE-2011-1754", "CVE-2011-1755", "CVE-2011-1756", "CVE-2011-1757", "CVE-2011-2188");
      script_bugtraq_id(48250);
      script_xref(name:"RHSA", value:"2011:0881");
    
      script_name(english:"RHEL 5 : jabberd (RHSA-2011:0881)");
      script_summary(english:"Checks rpm output for the updated package");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "An updated jabberd package that fixes one security issue is now
    available for Red Hat Network Proxy 5.4.1 for Red Hat Enterprise Linux
    5.
    
    The Red Hat Security Response Team has rated this update as having low
    security impact. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available from the
    CVE link in the References section.
    
    This package provides jabberd 2, an Extensible Messaging and Presence
    Protocol (XMPP) server used for XML based communication.
    
    It was found that the jabberd daemon did not properly detect recursion
    during entity expansion. A remote attacker could provide a
    specially crafted XML file containing a large number of nested entity
    references, which once processed by the jabberd daemon, could lead to
    a denial of service (excessive memory and CPU consumption).
    (CVE-2011-1755)
    
    Red Hat would like to thank Nico Golde of the Debian Security Team for
    reporting this issue. The Debian Security Team acknowledges Wouter
    Coekaerts as the original reporter.
    
    Users of Red Hat Network Proxy 5.4.1 are advised to upgrade to this
    updated jabberd package, which resolves this issue. For this update to
    take effect, Red Hat Network Proxy must be restarted. Refer to the
    Solution section for details."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.redhat.com/security/data/cve/CVE-2011-1755.html"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"http://rhn.redhat.com/errata/RHSA-2011-0881.html"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected jabberd package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(189);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jabberd");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2011/06/16");
      script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/24");
      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:"Red Hat 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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    
    flag = 0;
    if (rpm_check(release:"RHEL5", cpu:"i386", reference:"jabberd-2.2.8-12.el5sat")) flag++;
    if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"jabberd-2.2.8-12.el5sat")) flag++;
    if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"jabberd-2.2.8-12.el5sat")) 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");