Vulnerabilities > CVE-2002-0844 - Off-by-one Error vulnerability in Distrotech CVS

#%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-2004:004. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(12446);
  script_version ("1.27");
  script_cvs_date("Date: 2019/10/25 13:36:10");

  script_cve_id("CVE-2002-0844", "CVE-2003-0977");
  script_xref(name:"RHSA", value:"2004:004");

  script_name(english:"RHEL 2.1 / 3 : cvs (RHSA-2004:004)");
  script_summary(english:"Checks the 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:
"Updated cvs packages closing a vulnerability that could allow cvs to
attempt to create files and directories in the root file system are
now available.

CVS is a version control system frequently used to manage source code
repositories.

A flaw was found in versions of CVS prior to 1.11.10 where a malformed
module request could cause the CVS server to attempt to create files
or directories at the root level of the file system. However, normal
file system permissions would prevent the creation of these misplaced
directories. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2003-0977 to this issue.

Users of CVS are advised to upgrade to these erratum packages, which
contain a patch correcting this issue.

For Red Hat Enterprise Linux 2.1, these updates also fix an off-by-one
overflow in the CVS PreservePermissions code. The PreservePermissions
feature is not used by default (and can only be used for local CVS).
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CVE-2002-0844 to this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2002-0844"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2003-0977"
  );
  # http://ccvs.cvshome.org/servlets/NewsItemView?newsID=84
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?15fcc3b2"
  );
  # http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0081.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?3767cc0a"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2004:004"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected cvs package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cvs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");

  script_set_attribute(attribute:"vuln_publication_date", value:"2002/08/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2004/01/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/06");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.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");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^(2\.1|3)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1 / 3.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2004:004";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"cvs-1.11.1p1-9")) flag++;

  if (rpm_check(release:"RHEL3", reference:"cvs-1.11.2-14")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "cvs");
  }
}