CVSS2
Attack Vector
LOCAL
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:H/Au:N/C:N/I:P/A:N
EPSS
Percentile
5.1%
Former versions of the exmh program used /tmp for storing temporary files. No checks were made to ensure that nobody placed a symlink with the same name in /tmp in the meantime and thus was vulnerable to a symlink attack. This could lead to a malicious local user being able to overwrite any file writable by the user executing exmh. Upstream developers have reported and fixed this. The exmh program now use /tmp/login unless TMPDIR or EXMHTMPDIR is set.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-022. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(14859);
script_version("1.23");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2001-0125");
script_bugtraq_id(2201);
script_xref(name:"DSA", value:"022");
script_name(english:"Debian DSA-022-1 : exmh - local insecure tempfile creation");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Former versions of the exmh program used /tmp for storing temporary
files. No checks were made to ensure that nobody placed a symlink with
the same name in /tmp in the meantime and thus was vulnerable to a
symlink attack. This could lead to a malicious local user being able
to overwrite any file writable by the user executing exmh. Upstream
developers have reported and fixed this. The exmh program now use
/tmp/login unless TMPDIR or EXMHTMPDIR is set."
);
script_set_attribute(
attribute:"see_also",
value:"http://www.debian.org/security/2001/dsa-022"
);
script_set_attribute(
attribute:"solution",
value:"Upgrade the exmh packages immediately."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:N/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:exmh");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");
script_set_attribute(attribute:"patch_publication_date", value:"2001/01/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"2.2", prefix:"exmh", reference:"2.1.1-1.1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_note(port:0, extra:deb_report_get());
else security_note(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | exmh | p-cpe:/a:debian:debian_linux:exmh |
debian | debian_linux | 2.2 | cpe:/o:debian:debian_linux:2.2 |