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
100.0%
A heap-based buffer overflow was found in glibc’s
__nss_hostname_digits_dots() function, which is used by the gethostbyname() and gethostbyname2() glibc function calls. A remote attacker able to make an application call either of these functions could use this flaw to execute arbitrary code with the permissions of the user running the application. (CVE-2015-0235)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(81037);
script_version("1.18");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2015-0235");
script_xref(name:"CERT", value:"967332");
script_name(english:"Scientific Linux Security Update : glibc on SL5.x i386/x86_64 (20150127) (GHOST)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Scientific Linux host is missing one or more security
updates."
);
script_set_attribute(
attribute:"description",
value:
"A heap-based buffer overflow was found in glibc's
__nss_hostname_digits_dots() function, which is used by the
gethostbyname() and gethostbyname2() glibc function calls. A remote
attacker able to make an application call either of these functions
could use this flaw to execute arbitrary code with the permissions of
the user running the application. (CVE-2015-0235)"
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1501&L=scientific-linux-errata&T=0&P=2696
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?74b43985"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:"metasploit_name", value:'Exim GHOST (glibc gethostbyname) Buffer Overflow');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-debuginfo-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:glibc-utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:nscd");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/28");
script_set_attribute(attribute:"patch_publication_date", value:"2015/01/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/01/28");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Scientific Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.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) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 5.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL5", reference:"glibc-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-common-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-debuginfo-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-debuginfo-common-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-devel-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-headers-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"glibc-utils-2.5-123.el5_11.1")) flag++;
if (rpm_check(release:"SL5", reference:"nscd-2.5-123.el5_11.1")) 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, "glibc / glibc-common / glibc-debuginfo / glibc-debuginfo-common / etc");
}