Vulnerabilities > CVE-2015-8926 - NULL Pointer Dereference vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(93454);
  script_version("2.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/25");

  script_cve_id("CVE-2015-8916", "CVE-2015-8917", "CVE-2015-8919", "CVE-2015-8920", "CVE-2015-8921", "CVE-2015-8922", "CVE-2015-8923", "CVE-2015-8924", "CVE-2015-8925", "CVE-2015-8926", "CVE-2015-8928", "CVE-2015-8930", "CVE-2015-8931", "CVE-2015-8932", "CVE-2015-8934", "CVE-2016-1541", "CVE-2016-4300", "CVE-2016-4302", "CVE-2016-4809", "CVE-2016-5418", "CVE-2016-5844", "CVE-2016-6250", "CVE-2016-7166");

  script_name(english:"Scientific Linux Security Update : libarchive on SL7.x x86_64 (20160912)");
  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:
"Security Fix(es) :

  - A flaw was found in the way libarchive handled hardlink
    archive entries of non-zero size. Combined with flaws in
    libarchive's file system sandboxing, this issue could
    cause an application using libarchive to overwrite
    arbitrary files with arbitrary data from the archive.
    (CVE-2016-5418)

  - Multiple out-of-bounds write flaws were found in
    libarchive. Specially crafted ZIP, 7ZIP, or RAR files
    could cause a heap overflow, potentially allowing code
    execution in the context of the application using
    libarchive. (CVE-2016-1541, CVE-2016-4300,
    CVE-2016-4302)

  - Multiple out-of-bounds read flaws were found in
    libarchive. Specially crafted LZA/LZH, AR, MTREE, ZIP,
    TAR, or RAR files could cause the application to read
    data out of bounds, potentially disclosing a small
    amount of application memory, or causing an application
    crash. (CVE-2015-8919, CVE-2015-8920, CVE-2015-8921,
    CVE-2015-8923, CVE-2015-8924, CVE-2015-8925,
    CVE-2015-8926, CVE-2015-8928, CVE-2015-8934)

  - Multiple NULL pointer dereference flaws were found in
    libarchive. Specially crafted RAR, CAB, or 7ZIP files
    could cause an application using libarchive to crash.
    (CVE-2015-8916, CVE-2015-8917, CVE-2015-8922)

  - Multiple infinite loop / resource exhaustion flaws were
    found in libarchive. Specially crafted GZIP or ISO files
    could cause the application to consume an excessive
    amount of resources, eventually leading to a crash on
    memory exhaustion. (CVE-2016-7166, CVE-2015-8930)

  - A denial of service vulnerability was found in
    libarchive. A specially crafted CPIO archive containing
    a symbolic link to a large target path could cause
    memory allocation to fail, causing an application using
    libarchive that attempted to view or extract such
    archive to crash. (CVE-2016-4809)

  - An integer overflow flaw, leading to a buffer overflow,
    was found in libarchive's construction of ISO9660
    volumes. Attempting to create an ISO9660 volume with 2
    GB or 4 GB file names could cause the application to
    attempt to allocate 20 GB of memory. If this were to
    succeed, it could lead to an out of bounds write on the
    heap and potential code execution. (CVE-2016-6250)

  - Multiple instances of undefined behavior due to
    arithmetic overflow were found in libarchive. Specially
    crafted MTREE archives, Compress streams, or ISO9660
    volumes could potentially cause the application to fail
    to read the archive, or to crash. (CVE-2015-8931,
    CVE-2015-8932, CVE-2016-5844)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1609&L=scientific-linux-errata&F=&S=&P=1167
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a3fd90f0"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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:R/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:fermilab:scientific_linux:bsdcpio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:bsdtar");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libarchive");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libarchive-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libarchive-devel");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 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:"^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:"bsdcpio-3.1.2-10.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"bsdtar-3.1.2-10.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libarchive-3.1.2-10.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libarchive-debuginfo-3.1.2-10.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libarchive-devel-3.1.2-10.el7_2")) 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, "bsdcpio / bsdtar / libarchive / libarchive-debuginfo / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2016:1909-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(93185);
  script_version("2.9");
  script_cvs_date("Date: 2019/09/11 11:22:13");

  script_cve_id("CVE-2015-8918", "CVE-2015-8919", "CVE-2015-8920", "CVE-2015-8921", "CVE-2015-8922", "CVE-2015-8923", "CVE-2015-8924", "CVE-2015-8925", "CVE-2015-8926", "CVE-2015-8928", "CVE-2015-8929", "CVE-2015-8930", "CVE-2015-8931", "CVE-2015-8932", "CVE-2015-8933", "CVE-2015-8934", "CVE-2016-4300", "CVE-2016-4301", "CVE-2016-4302", "CVE-2016-4809");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : libarchive (SUSE-SU-2016:1909-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"libarchive was updated to fix 20 security issues. These security
issues were fixed :

  - CVE-2015-8918: Overlapping memcpy in CAB parser
    (bsc#985698).

  - CVE-2015-8919: Heap out of bounds read in LHA/LZH parser
    (bsc#985697).

  - CVE-2015-8920: Stack out of bounds read in ar parser
    (bsc#985675).

  - CVE-2015-8921: Global out of bounds read in mtree parser
    (bsc#985682).

  - CVE-2015-8922: NULL pointer access in 7z parser
    (bsc#985685).

  - CVE-2015-8923: Unclear crashes in ZIP parser
    (bsc#985703).

  - CVE-2015-8924: Heap buffer read overflow in tar
    (bsc#985609).

  - CVE-2015-8925: Unclear invalid memory read in mtree
    parser (bsc#985706).

  - CVE-2015-8926: NULL pointer access in RAR parser
    (bsc#985704).

  - CVE-2015-8928: Heap out of bounds read in mtree parser
    (bsc#985679).

  - CVE-2015-8929: Memory leak in tar parser (bsc#985669).

  - CVE-2015-8930: Endless loop in ISO parser (bsc#985700).

  - CVE-2015-8931: Undefined behavior / signed integer
    overflow in mtree parser (bsc#985689).

  - CVE-2015-8932: Compress handler left shifting larger
    than int size (bsc#985665).

  - CVE-2015-8933: Undefined behavior / signed integer
    overflow in TAR parser (bsc#985688).

  - CVE-2015-8934: Out of bounds read in RAR (bsc#985673).

  - CVE-2016-4300: Heap buffer overflow vulnerability in the
    7zip read_SubStreamsInfo (bsc#985832).

  - CVE-2016-4301: Stack buffer overflow in the mtree
    parse_device (bsc#985826).

  - CVE-2016-4302: Heap buffer overflow in the Rar
    decompression functionality (bsc#985835).

  - CVE-2016-4809: Memory allocate error with symbolic links
    in cpio archives (bsc#984990).

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=984990"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985609"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985665"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985669"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985673"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985675"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985679"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985682"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985685"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985688"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985689"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985697"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985698"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985700"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985703"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985704"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985706"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985826"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985832"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=985835"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8918/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8919/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8920/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8921/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8922/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8923/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8924/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8925/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8926/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8928/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8929/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8930/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8931/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8932/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8933/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8934/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4300/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4301/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4302/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4809/"
  );
  # https://www.suse.com/support/update/announcement/2016/suse-su-20161909-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?62166a5b"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP1:zypper in -t
patch SUSE-SLE-SDK-12-SP1-2016-1123=1

SUSE Linux Enterprise Server 12-SP1:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2016-1123=1

SUSE Linux Enterprise Desktop 12-SP1:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP1-2016-1123=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libarchive-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libarchive13");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libarchive13-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/09/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/07/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"libarchive-debugsource-3.1.2-22.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libarchive13-3.1.2-22.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libarchive13-debuginfo-3.1.2-22.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libarchive-debugsource-3.1.2-22.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libarchive13-3.1.2-22.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libarchive13-debuginfo-3.1.2-22.1")) 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, "libarchive");
}