Vulnerabilities > CVE-2007-2650 - Resource Exhaustion vulnerability in multiple products

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
clamav
debian
CWE-400
nessus
NVD
Published: 2007-05-14
Updated: 2020-11-09

Summary

The OLE2 parser in Clam AntiVirus (ClamAV) allows remote attackers to cause a denial of service (resource consumption) via an OLE2 file with (1) a large property size or (2) a loop in the FAT file block chain that triggers an infinite loop, as demonstrated via a crafted DOC file.

Vulnerable Configurations

Part Description Count
Application
Clamav
96
OS
Debian
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Inducing Account Lockout
    An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
  • Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS))
    XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2007-1154.NASL
    descriptionCan
    last seen2020-06-01
    modified2020-06-02
    plugin id27699
    published2007-11-06
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/27699
    titleFedora 7 : clamav-0.90.3-1.fc7 (2007-1154)
    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 2007-1154.
#

include("compat.inc");

if (description)
{
  script_id(27699);
  script_version ("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:25");

  script_cve_id("CVE-2007-2650");
  script_xref(name:"FEDORA", value:"2007-1154");

  script_name(english:"Fedora 7 : clamav-0.90.3-1.fc7 (2007-1154)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Can't reach the maintainer, so pushing this myself, given it's a
security related update.

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."
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2007-July/002824.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c9d608b0"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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:fedoraproject:fedora:clamav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-data-empty");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-filesystem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-milter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-milter-sysv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-server-sysv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav-update");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:7");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/07/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  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:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 7.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:"FC7", reference:"clamav-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-data-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-data-empty-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-debuginfo-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-devel-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-filesystem-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-lib-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-milter-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-milter-sysv-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-server-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-server-sysv-0.90.3-1.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"clamav-update-0.90.3-1.fc7")) 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, "clamav / clamav-data / clamav-data-empty / clamav-debuginfo / etc");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1320.NASL
    descriptionSeveral remote vulnerabilities have been discovered in the Clam anti-virus toolkit. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2007-2650 It was discovered that the OLE2 parser can be tricked into an infinite loop and memory exhaustion. - CVE-2007-3023 It was discovered that the NsPack decompression code performed insufficient sanitising on an internal length variable, resulting in a potential buffer overflow. - CVE-2007-3024 It was discovered that temporary files were created with insecure permissions, resulting in information disclosure. - CVE-2007-3122 It was discovered that the decompression code for RAR archives allows bypassing a scan of a RAR archive due to insufficient validity checks. - CVE-2007-3123 It was discovered that the decompression code for RAR archives performs insufficient validation of header values, resulting in a buffer overflow.
    last seen2020-06-01
    modified2020-06-02
    plugin id25586
    published2007-06-27
    reporterThis script is Copyright (C) 2007-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/25586
    titleDebian DSA-1320-1 : clamav - several vulnerabilities
    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-1320. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(25586);
  script_version("1.20");
  script_cvs_date("Date: 2019/08/02 13:32:20");

  script_cve_id("CVE-2007-2650", "CVE-2007-3023", "CVE-2007-3024", "CVE-2007-3025", "CVE-2007-3122", "CVE-2007-3123");
  script_xref(name:"DSA", value:"1320");

  script_name(english:"Debian DSA-1320-1 : clamav - several vulnerabilities");
  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:
"Several remote vulnerabilities have been discovered in the Clam
anti-virus toolkit. The Common Vulnerabilities and Exposures project
identifies the following problems :

  - CVE-2007-2650
    It was discovered that the OLE2 parser can be tricked
    into an infinite loop and memory exhaustion.

  - CVE-2007-3023
    It was discovered that the NsPack decompression code
    performed insufficient sanitising on an internal length
    variable, resulting in a potential buffer overflow.

  - CVE-2007-3024
    It was discovered that temporary files were created with
    insecure permissions, resulting in information
    disclosure.

  - CVE-2007-3122
    It was discovered that the decompression code for RAR
    archives allows bypassing a scan of a RAR archive due to
    insufficient validity checks.

  - CVE-2007-3123
    It was discovered that the decompression code for RAR
    archives performs insufficient validation of header
    values, resulting in a buffer overflow."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-2650"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-3023"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-3024"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-3122"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-3123"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-3024"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2007/dsa-1320"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the clamav packages. An updated package for oldstable/powerpc
is not yet available. It will be provided later.

For the oldstable distribution (sarge) these problems have been fixed
in version 0.84-2.sarge.17. Please note that the fix for CVE-2007-3024
hasn't been backported to oldstable.

For the stable distribution (etch) these problems have been fixed in
version 0.90.1-3etch1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/06/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 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:"3.1", prefix:"clamav", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-base", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-daemon", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-docs", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-freshclam", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-milter", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"clamav-testfiles", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"libclamav-dev", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"3.1", prefix:"libclamav1", reference:"0.84-2.sarge.17")) flag++;
if (deb_check(release:"4.0", prefix:"clamav", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-base", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-daemon", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-dbg", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-docs", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-freshclam", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-milter", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"clamav-testfiles", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"libclamav-dev", reference:"0.90.1-3etch3")) flag++;
if (deb_check(release:"4.0", prefix:"libclamav2", reference:"0.90.1-3etch3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyMandriva Local Security Checks
    NASL idMANDRAKE_MDKSA-2007-115.NASL
    descriptionA vulnerability in the OLE2 parser in ClamAV was found that could allow a remote attacker to cause a denial of service via resource consumption with a carefully crafted OLE2 file. Other vulnerabilities and bugs have also been corrected in 0.90.3 which is being provided with this update.
    last seen2020-06-01
    modified2020-06-02
    plugin id25432
    published2007-06-05
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/25432
    titleMandrake Linux Security Advisory : clamav (MDKSA-2007:115)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-200706-05.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-200706-05 (ClamAV: Multiple Denials of Service) Several vulnerabilities were discovered in ClamAV by various researchers: Victor Stinner (INL) discovered that the OLE2 parser may enter in an infinite loop (CVE-2007-2650). A boundary error was also reported by an anonymous researcher in the file unsp.c, which might lead to a buffer overflow (CVE-2007-3023). The file unrar.c contains a heap-based buffer overflow via a modified vm_codesize value from a RAR file (CVE-2007-3123). The RAR parsing engine can be bypassed via a RAR file with a header flag value of 10 (CVE-2007-3122). The cli_gentempstream() function from clamdscan creates temporary files with insecure permissions (CVE-2007-3024). Impact : A remote attacker could send a specially crafted file to the scanner, possibly triggering one of the vulnerabilities. The two buffer overflows are reported to only cause Denial of Service. This would lead to a Denial of Service by CPU consumption or a crash of the scanner. The insecure temporary file creation vulnerability could be used by a local user to access sensitive data. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id25534
    published2007-06-18
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/25534
    titleGLSA-200706-05 : ClamAV: Multiple Denials of Service
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_903654BD192711DCB8A002E0185F8D72.NASL
    descriptionClamav had been found vulnerable to multiple vulnerabilities : - Improper checking for the end of an buffer causing an unspecified attack vector. - Insecure temporary file handling, which could be exploited to read sensitive information. - A flaw in the parser engine which could allow a remote attacker to bypass the scanning of RAR files. - A flaw in libclamav/unrar.c which could cause a remote Denial of Service (DoS) by sending a specially crafted RAR file with a modified vm_codesize. - A flaw in the OLE2 parser which could cause a remote Denial of Service (DoS).
    last seen2020-06-01
    modified2020-06-02
    plugin id25560
    published2007-06-21
    reporterThis script is Copyright (C) 2007-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/25560
    titleFreeBSD : clamav -- multiple vulnerabilities (903654bd-1927-11dc-b8a0-02e0185f8d72)

References