Vulnerabilities > CVE-2008-2953 - Improper Input Validation vulnerability in Linux Direct Connect

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
linux
CWE-20
nessus

Summary

Linux DC++ (linuxdcpp) before 0.707 allows remote attackers to cause a denial of service (crash) via "partial file list requests" that trigger a NULL pointer dereference.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2008-236.NASL
    descriptionSeveral vulnerabilities were found in the vim editor : A number of input sanitization flaws were found in various vim system functions. If a user were to open a specially crafted file, it would be possible to execute arbitrary code as the user running vim (CVE-2008-2712). Ulf Härnhammar of Secunia Research found a format string flaw in vim
    last seen2020-06-01
    modified2020-06-02
    plugin id36821
    published2009-04-23
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/36821
    titleMandriva Linux Security Advisory : vim (MDVSA-2008:236-1)
    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-2008:236. 
    # The text itself is copyright (C) Mandriva S.A.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(36821);
      script_version ("1.15");
      script_cvs_date("Date: 2019/08/02 13:32:50");
    
      script_cve_id("CVE-2007-2953", "CVE-2008-2712", "CVE-2008-2953", "CVE-2008-3074", "CVE-2008-3075", "CVE-2008-3076", "CVE-2008-4101", "CVE-2008-4677");
      script_bugtraq_id(25095);
      script_xref(name:"MDVSA", value:"2008:236-1");
    
      script_name(english:"Mandriva Linux Security Advisory : vim (MDVSA-2008:236-1)");
      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:
    "Several vulnerabilities were found in the vim editor :
    
    A number of input sanitization flaws were found in various vim system
    functions. If a user were to open a specially crafted file, it would
    be possible to execute arbitrary code as the user running vim
    (CVE-2008-2712).
    
    Ulf Härnhammar of Secunia Research found a format
    string flaw in vim's help tags processor. If a user were tricked into
    executing the helptags command on malicious data, it could result in
    the execution of arbitrary code as the user running vim
    (CVE-2008-2953).
    
    A flaw was found in how tar.vim handled TAR archive browsing. If a
    user were to open a special TAR archive using the plugin, it could
    result in the execution of arbitrary code as the user running vim
    (CVE-2008-3074).
    
    A flaw was found in how zip.vim handled ZIP archive browsing. If a
    user were to open a special ZIP archive using the plugin, it could
    result in the execution of arbitrary code as the user running vim
    (CVE-2008-3075).
    
    A number of security flaws were found in netrw.vim, the vim plugin
    that provides the ability to read and write files over the network. If
    a user opened a specially crafted file or directory with the netrw
    plugin, it could result in the execution of arbitrary code as the user
    running vim (CVE-2008-3076).
    
    A number of input validation flaws were found in vim's keyword and tag
    handling. If vim looked up a document's maliciously crafted tag or
    keyword, it was possible to execute arbitary code as the user running
    vim (CVE-2008-4101).
    
    A vulnerability was found in certain versions of netrw.vim where it
    would send FTP credentials stored for an FTP session to subsequent FTP
    sessions to servers on different hosts, exposing FTP credentials to
    remote hosts (CVE-2008-4677).
    
    This update provides vim 7.2 (patchlevel 65) which corrects all of
    these issues and introduces a number of new features and bug fixes.
    
    Update :
    
    The previous vim update incorrectly introduced a requirement on
    libruby and also conflicted with a file from the git-core package (in
    contribs). These issues have been corrected with these updated
    packages."
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      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(20, 78, 94, 255);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:vim-X11");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:vim-common");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:vim-enhanced");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:vim-minimal");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2008.0");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2008.1");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2009.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2008/12/08");
      script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
      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:"MDK2008.0", reference:"vim-X11-7.2.065-9.3mdv2008.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.0", reference:"vim-common-7.2.065-9.3mdv2008.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.0", reference:"vim-enhanced-7.2.065-9.3mdv2008.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.0", reference:"vim-minimal-7.2.065-9.3mdv2008.0", yank:"mdv")) flag++;
    
    if (rpm_check(release:"MDK2008.1", reference:"vim-X11-7.2.065-9.3mdv2008.1", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.1", reference:"vim-common-7.2.065-9.3mdv2008.1", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.1", reference:"vim-enhanced-7.2.065-9.3mdv2008.1", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2008.1", reference:"vim-minimal-7.2.065-9.3mdv2008.1", yank:"mdv")) flag++;
    
    if (rpm_check(release:"MDK2009.0", reference:"vim-X11-7.2.065-9.3mdv2009.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2009.0", reference:"vim-common-7.2.065-9.3mdv2009.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2009.0", reference:"vim-enhanced-7.2.065-9.3mdv2009.0", yank:"mdv")) flag++;
    if (rpm_check(release:"MDK2009.0", reference:"vim-minimal-7.2.065-9.3mdv2009.0", yank:"mdv")) 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_2008-6018.NASL
    descriptionFix for CVE-2008-2953 and CVE-2008-2954 (#453731) 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 seen2020-06-01
    modified2020-06-02
    plugin id33405
    published2008-07-08
    reporterThis script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/33405
    titleFedora 9 : linuxdcpp-1.0.1-3.fc9 (2008-6018)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-6038.NASL
    descriptionFix for CVE-2008-2953 and CVE-2008-2954 (#453731) 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 seen2020-06-01
    modified2020-06-02
    plugin id33409
    published2008-07-08
    reporterThis script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/33409
    titleFedora 8 : linuxdcpp-1.0.1-2.fc8 (2008-6038)