RHEL 2.1 / 3 : lftp (RHSA-2003:404)

2004-07-06T00:00:00
ID REDHAT-RHSA-2003-404.NASL
Type nessus
Reporter Tenable
Modified 2018-11-15T00:00:00

Description

Updated lftp packages are now available that fix a buffer overflow security vulnerability.

lftp is a command-line file transfer program supporting FTP and HTTP protocols.

Ulf Harnhammar discovered a buffer overflow bug in versions of lftp up to and including 2.6.9. An attacker could create a carefully crafted directory on a website such that, if a user connects to that directory using the lftp client and subsequently issues a 'ls' or 'rels' command, the attacker could execute arbitrary code on the users machine. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2003-0963 to this issue.

Users of lftp are advised to upgrade to these erratum packages, which contain a backported security patch and are not vulnerable to this issue.

Red Hat would like to thank Ulf Harnhammar for discovering and alerting us to this issue.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2003:404. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(12441);
  script_version ("1.25");
  script_cvs_date("Date: 2018/11/15 11:40:29");

  script_cve_id("CVE-2003-0963");
  script_xref(name:"RHSA", value:"2003:404");

  script_name(english:"RHEL 2.1 / 3 : lftp (RHSA-2003:404)");
  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 lftp packages are now available that fix a buffer overflow
security vulnerability.

lftp is a command-line file transfer program supporting FTP and HTTP
protocols.

Ulf Harnhammar discovered a buffer overflow bug in versions of lftp
up to and including 2.6.9. An attacker could create a carefully
crafted directory on a website such that, if a user connects to that
directory using the lftp client and subsequently issues a 'ls' or
'rels' command, the attacker could execute arbitrary code on the users
machine. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2003-0963 to this issue.

Users of lftp are advised to upgrade to these erratum packages, which
contain a backported security patch and are not vulnerable to this
issue.

Red Hat would like to thank Ulf Harnhammar for discovering and
alerting us to this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2003-0963"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2003:404"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected lftp 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:lftp");
  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:"patch_publication_date", value:"2003/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2018 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 = eregmatch(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 (! ereg(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-2003:404";
  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:"lftp-2.4.9-2")) flag++;

  if (rpm_check(release:"RHEL3", reference:"lftp-2.6.3-5")) 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, "lftp");
  }
}