6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
0.974 High
EPSS
Percentile
99.9%
A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module. (CVE-2015-7547)
It was discovered that the calloc implementation in glibc could return memory areas which contain non-zero bytes. This could result in unexpected application behavior such as hangs or crashes.
(CVE-2015-5229)
This update also fixes the following bugs :
With this update, the M_TRIM_THRESHOLD method is extended to apply to all memory pools, which improves performance for threads with very high amounts of free calls and limits the number of ‘madvise’ system calls. The change also increases the total transient memory usage by processes because the trim threshold must be reached before memory can be freed.
To return to the previous behavior, you can either set M_TRIM_THRESHOLD using the ‘mallopt’ function, or set the MALLOC_TRIM_THRESHOLD environment variable to 0.
#%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(88798);
script_version("2.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/18");
script_cve_id("CVE-2015-5229", "CVE-2015-7547");
script_xref(name:"TRA", value:"TRA-2017-08");
script_xref(name:"IAVA", value:"2016-A-0053-S");
script_name(english:"Scientific Linux Security Update : glibc on SL7.x x86_64 (20160216)");
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 stack-based buffer overflow was found in the way the libresolv
library performed dual A/AAAA DNS queries. A remote attacker could
create a specially crafted DNS response which could cause libresolv to
crash or, potentially, execute code with the permissions of the user
running the library. Note: this issue is only exposed when libresolv
is called from the nss_dns NSS service module. (CVE-2015-7547)
It was discovered that the calloc implementation in glibc could return
memory areas which contain non-zero bytes. This could result in
unexpected application behavior such as hangs or crashes.
(CVE-2015-5229)
This update also fixes the following bugs :
- The existing implementation of the 'free' function
causes all memory pools beyond the first to return freed
memory directly to the operating system as quickly as
possible. This can result in performance degradation
when the rate of free calls is very high. The first
memory pool (the main pool) does provide a method to
rate limit the returns via M_TRIM_THRESHOLD, but this
method is not available to subsequent memory pools.
With this update, the M_TRIM_THRESHOLD method is extended to apply to
all memory pools, which improves performance for threads with very
high amounts of free calls and limits the number of 'madvise' system
calls. The change also increases the total transient memory usage by
processes because the trim threshold must be reached before memory can
be freed.
To return to the previous behavior, you can either set
M_TRIM_THRESHOLD using the 'mallopt' function, or set the
MALLOC_TRIM_THRESHOLD environment variable to 0.
- On the little-endian variant of 64-bit IBM Power Systems
(ppc64le), a bug in the dynamic loader could cause
applications compiled with profiling enabled to fail to
start with the error 'monstartup: out of memory'. The
bug has been corrected and applications compiled for
profiling now start correctly.");
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1602&L=scientific-linux-errata&F=&S=&P=15470
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3676f945");
script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/research/tra-2017-08");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/18");
script_set_attribute(attribute:"patch_publication_date", value:"2016/02/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/17");
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-static");
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:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Scientific Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2016-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
flag = 0;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-common-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-debuginfo-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-debuginfo-common-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-devel-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-headers-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-static-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"glibc-utils-2.17-106.el7_2.4")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"nscd-2.17-106.el7_2.4")) 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");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fermilab | scientific_linux | glibc-debuginfo-common | p-cpe:/a:fermilab:scientific_linux:glibc-debuginfo-common |
fermilab | scientific_linux | glibc-common | p-cpe:/a:fermilab:scientific_linux:glibc-common |
fermilab | scientific_linux | glibc | p-cpe:/a:fermilab:scientific_linux:glibc |
fermilab | scientific_linux | glibc-static | p-cpe:/a:fermilab:scientific_linux:glibc-static |
fermilab | scientific_linux | glibc-utils | p-cpe:/a:fermilab:scientific_linux:glibc-utils |
fermilab | scientific_linux | x-cpe:/o:fermilab:scientific_linux | |
fermilab | scientific_linux | glibc-debuginfo | p-cpe:/a:fermilab:scientific_linux:glibc-debuginfo |
fermilab | scientific_linux | nscd | p-cpe:/a:fermilab:scientific_linux:nscd |
fermilab | scientific_linux | glibc-devel | p-cpe:/a:fermilab:scientific_linux:glibc-devel |
fermilab | scientific_linux | glibc-headers | p-cpe:/a:fermilab:scientific_linux:glibc-headers |
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
0.974 High
EPSS
Percentile
99.9%