Unbounded stack allocation in catopen function
A stack based buffer overflow vulnerability was found in the catopen() function. An excessively long string passed to the function could cause it to crash or, potentially, execute arbitrary code.(CVE-2015-8779)
Integer overflow in hcreate and hcreate_r
An integer overflow vulnerability was found in hcreate() and hcreate_r() functions which could result in an out-of-bounds memory access. This could lead to application crash or, potentially, arbitrary code execution. (CVE-2015-8778)
Unbounded stack allocation in nan* functions
A stack overflow vulnerability was found in nan* functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code. (CVE-2014-9761)
LD_POINTER_GUARD in the environment is not sanitized
It was found that the dynamic loader did not sanitize the LD_POINTER_GUARD environment variable. An attacker could use this flaw to bypass the pointer guarding protection on set-user-ID or set-group-ID programs to execute arbitrary code with the permissions of the user running the application.(CVE-2015-8777)
Segmentation fault caused by passing out-of-range data to strftime()
It was found that out-of-range time values passed to the strftime() function could result in an out-of-bounds memory access. This could lead to application crash or, potentially, information disclosure.
(CVE-2015-8776)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2017-877.
#
include("compat.inc");
if (description)
{
script_id(102865);
script_version("3.2");
script_cvs_date("Date: 2018/04/18 15:09:36");
script_cve_id("CVE-2014-9761", "CVE-2015-8776", "CVE-2015-8777", "CVE-2015-8778", "CVE-2015-8779");
script_xref(name:"ALAS", value:"2017-877");
script_name(english:"Amazon Linux AMI : glibc (ALAS-2017-877)");
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:
"Unbounded stack allocation in catopen function
A stack based buffer overflow vulnerability was found in the catopen()
function. An excessively long string passed to the function could
cause it to crash or, potentially, execute arbitrary
code.(CVE-2015-8779)
Integer overflow in hcreate and hcreate_r
An integer overflow vulnerability was found in hcreate() and
hcreate_r() functions which could result in an out-of-bounds memory
access. This could lead to application crash or, potentially,
arbitrary code execution. (CVE-2015-8778)
Unbounded stack allocation in nan* functions
A stack overflow vulnerability was found in nan* functions that could
cause applications, which process long strings with the nan function,
to crash or, potentially, execute arbitrary code. (CVE-2014-9761)
LD_POINTER_GUARD in the environment is not sanitized
It was found that the dynamic loader did not sanitize the
LD_POINTER_GUARD environment variable. An attacker could use this flaw
to bypass the pointer guarding protection on set-user-ID or
set-group-ID programs to execute arbitrary code with the permissions
of the user running the application.(CVE-2015-8777)
Segmentation fault caused by passing out-of-range data to strftime()
It was found that out-of-range time values passed to the strftime()
function could result in an out-of-bounds memory access. This could
lead to application crash or, potentially, information disclosure.
(CVE-2015-8776)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2017-877.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update glibc' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-debuginfo-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-static");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:glibc-utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nscd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2017/08/31");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/01");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2017-2018 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:"glibc-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-common-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-debuginfo-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-debuginfo-common-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-devel-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-headers-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-static-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"glibc-utils-2.17-196.172.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nscd-2.17-196.172.amzn1")) 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, "glibc / glibc-common / glibc-debuginfo / glibc-debuginfo-common / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | glibc | p-cpe:/a:amazon:linux:glibc |
amazon | linux | glibc-common | p-cpe:/a:amazon:linux:glibc-common |
amazon | linux | glibc-debuginfo | p-cpe:/a:amazon:linux:glibc-debuginfo |
amazon | linux | glibc-debuginfo-common | p-cpe:/a:amazon:linux:glibc-debuginfo-common |
amazon | linux | glibc-devel | p-cpe:/a:amazon:linux:glibc-devel |
amazon | linux | glibc-headers | p-cpe:/a:amazon:linux:glibc-headers |
amazon | linux | glibc-static | p-cpe:/a:amazon:linux:glibc-static |
amazon | linux | glibc-utils | p-cpe:/a:amazon:linux:glibc-utils |
amazon | linux | nscd | p-cpe:/a:amazon:linux:nscd |
amazon | linux | cpe:/o:amazon:linux |