Vulnerabilities > CVE-2004-0581 - Symbolic Link vulnerability in KSymoops KSymoops-GZNM Insecure Temporary File Handling

047910
CVSS 4.6 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
local
low complexity
gnu
mandrakesoft
nessus

Summary

ksymoops-gznm script in Mandrake Linux 9.1 through 10.0, and Corporate Server 2.1, allows local users to delete arbitrary files via a symlink attack on files in /tmp.

Nessus

NASL familyMandriva Local Security Checks
NASL idMANDRAKE_MDKSA-2004-060.NASL
descriptionGeoffrey Lee discovered a problem with the ksymoops-gznm script distributed with Mandrakelinux. The script fails to do proper checking when copying a file to the /tmp directory. Because of this, a local attacker can setup a symlink to point to a file that they do not have permission to remove. The problem is difficult to exploit because someone with root privileges needs to run ksymoops on a particular module for which a symlink for the same filename already exists.
last seen2020-06-01
modified2020-06-02
plugin id14159
published2004-07-31
reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/14159
titleMandrake Linux Security Advisory : ksymoops (MDKSA-2004:060)
code
#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2004:060. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(14159);
  script_version ("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:47");

  script_cve_id("CVE-2004-0581");
  script_xref(name:"MDKSA", value:"2004:060");

  script_name(english:"Mandrake Linux Security Advisory : ksymoops (MDKSA-2004:060)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Geoffrey Lee discovered a problem with the ksymoops-gznm script
distributed with Mandrakelinux. The script fails to do proper checking
when copying a file to the /tmp directory. Because of this, a local
attacker can setup a symlink to point to a file that they do not have
permission to remove. The problem is difficult to exploit because
someone with root privileges needs to run ksymoops on a particular
module for which a symlink for the same filename already exists."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ksymoops package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/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:mandriva:linux:ksymoops");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"MDK10.0", reference:"ksymoops-2.4.9-2.1.100mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.1", cpu:"i386", reference:"ksymoops-2.4.8-1.1.91mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.2", reference:"ksymoops-2.4.9-2.1.92mdk", yank:"mdk")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");