It was discovered that the D-Bus library honored environment settings even when running with elevated privileges. A local attacker could possibly use this flaw to escalate their privileges, by setting specific environment variables before running a setuid or setgid application linked against the D-Bus library (libdbus).
(CVE-2012-3524)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2012-128.
#
include("compat.inc");
if (description)
{
script_id(69618);
script_version("1.6");
script_cvs_date("Date: 2018/04/18 15:09:34");
script_cve_id("CVE-2012-3524");
script_xref(name:"ALAS", value:"2012-128");
script_xref(name:"RHSA", value:"2012:1261");
script_name(english:"Amazon Linux AMI : dbus (ALAS-2012-128)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Amazon Linux AMI host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"It was discovered that the D-Bus library honored environment settings
even when running with elevated privileges. A local attacker could
possibly use this flaw to escalate their privileges, by setting
specific environment variables before running a setuid or setgid
application linked against the D-Bus library (libdbus).
(CVE-2012-3524)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2012-128.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update dbus' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:dbus");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:dbus-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:dbus-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:dbus-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:dbus-libs");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2012/09/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/04");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
script_family(english:"Amazon Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"ALA", reference:"dbus-1.2.24-7.16.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"dbus-debuginfo-1.2.24-7.16.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"dbus-devel-1.2.24-7.16.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"dbus-doc-1.2.24-7.16.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"dbus-libs-1.2.24-7.16.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dbus / dbus-debuginfo / dbus-devel / dbus-doc / dbus-libs");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | dbus | p-cpe:/a:amazon:linux:dbus |
amazon | linux | dbus-debuginfo | p-cpe:/a:amazon:linux:dbus-debuginfo |
amazon | linux | dbus-devel | p-cpe:/a:amazon:linux:dbus-devel |
amazon | linux | dbus-doc | p-cpe:/a:amazon:linux:dbus-doc |
amazon | linux | dbus-libs | p-cpe:/a:amazon:linux:dbus-libs |
amazon | linux | cpe:/o:amazon:linux |