CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
Percentile
94.9%
A buffer overflow bug has been discovered in unarj when handling long file names contained in an archive. An attacker could create an archive with a specially crafted path which could cause unarj to crash or execute arbitrary instructions. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0947 to this issue.
Additionally, a path traversal vulnerability exists in unarj which allows an attacker to extract files to the parent (‘…’) directory.
When used recursively, this vulnerability can be used to overwrite critical system files and programs.
Users of unarj are advised to upgrade to these packages.
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory 2004-414.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(62247);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2004-0947");
script_xref(name:"FEDORA", value:"2004-414");
script_name(english:"Fedora Core 2 : unarj-2.63a-7 (2004-414)");
script_summary(english:"Checks rpm output for the updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Fedora Core host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"A buffer overflow bug has been discovered in unarj when handling long
file names contained in an archive. An attacker could create an
archive with a specially crafted path which could cause unarj to crash
or execute arbitrary instructions. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2004-0947
to this issue.
Additionally, a path traversal vulnerability exists in unarj which
allows an attacker to extract files to the parent ('..') directory.
When used recursively, this vulnerability can be used to overwrite
critical system files and programs.
Users of unarj are advised to upgrade to these packages.
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/announce/2004-November/000393.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?d089fdde"
);
script_set_attribute(attribute:"solution", value:"Update the affected unarj package.");
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:fedoraproject:fedora:unarj");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora_core:2");
script_set_attribute(attribute:"patch_publication_date", value:"2004/11/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2012-2021 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:"^2([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 2.x", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC2", reference:"unarj-2.63a-7")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "unarj");
}