An updated sharutils package is now available.
This update has been rated as having low security impact by the Red Hat Security Response Team.
The sharutils package contains a set of tools for encoding and decoding packages of files in binary or text format.
A stack based overflow bug was found in the way shar handles the -o option. If a user can be tricked into running a specially crafted command, it could lead to arbitrary code execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-1772 to this issue. Please note that this issue does not affect Red Hat Enterprise Linux 4.
Two buffer overflow bugs were found in sharutils. If an attacker can place a malicious ‘wc’ command on a victim’s machine, or trick a victim into running a specially crafted command, it could lead to arbitrary code execution. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-1773 to this issue.
A bug was found in the way unshar creates temporary files. A local user could use symlinks to overwrite arbitrary files the victim running unshar has write access to. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0990 to this issue.
All users of sharutils should upgrade to this updated package, which includes backported fixes to correct these issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2005:377 and
# CentOS Errata and Security Advisory 2005:377 respectively.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(21814);
script_version("1.20");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2004-1772", "CVE-2004-1773", "CVE-2005-0990");
script_xref(name:"RHSA", value:"2005:377");
script_name(english:"CentOS 3 / 4 : sharutils (CESA-2005:377)");
script_summary(english:"Checks rpm output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote CentOS host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"An updated sharutils package is now available.
This update has been rated as having low security impact by the Red
Hat Security Response Team.
The sharutils package contains a set of tools for encoding and
decoding packages of files in binary or text format.
A stack based overflow bug was found in the way shar handles the -o
option. If a user can be tricked into running a specially crafted
command, it could lead to arbitrary code execution. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2004-1772 to this issue. Please note that this issue does not
affect Red Hat Enterprise Linux 4.
Two buffer overflow bugs were found in sharutils. If an attacker can
place a malicious 'wc' command on a victim's machine, or trick a
victim into running a specially crafted command, it could lead to
arbitrary code execution. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CVE-2004-1773 to this
issue.
A bug was found in the way unshar creates temporary files. A local
user could use symlinks to overwrite arbitrary files the victim
running unshar has write access to. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2005-0990
to this issue.
All users of sharutils should upgrade to this updated package, which
includes backported fixes to correct these issues."
);
# https://lists.centos.org/pipermail/centos-announce/2005-April/011600.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?f0ad6fa1"
);
# https://lists.centos.org/pipermail/centos-announce/2005-April/011602.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?52871161"
);
# https://lists.centos.org/pipermail/centos-announce/2005-April/011605.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?7d767ffd"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected sharutils 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:centos:centos:sharutils");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:3");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:4");
script_set_attribute(attribute:"vuln_publication_date", value:"2004/12/31");
script_set_attribute(attribute:"patch_publication_date", value:"2005/04/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/03");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2006-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"CentOS Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^(3|4)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 3.x / 4.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-3", cpu:"ia64", reference:"sharutils-4.2.1-16.2")) flag++;
if (rpm_check(release:"CentOS-4", reference:"sharutils-4.2.1-22.2")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "sharutils");
}