Vulnerabilities > CVE-2016-2315 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2016:0496 and 
# CentOS Errata and Security Advisory 2016:0496 respectively.
#

include("compat.inc");

if (description)
{
  script_id(90124);
  script_version("2.6");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2016-2315", "CVE-2016-2324");
  script_xref(name:"RHSA", value:"2016:0496");

  script_name(english:"CentOS 6 / 7 : git (CESA-2016:0496)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated git packages that fix two security issues are now available
for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

Git is a distributed revision control system with a decentralized
architecture. As opposed to centralized version control systems with a
client-server model, Git ensures that each working copy of a Git
repository is an exact copy with complete revision history. This not
only allows the user to work on and contribute to projects without the
need to have permission to push the changes to their official
repositories, but also makes it possible for the user to work with no
network connection.

An integer truncation flaw and an integer overflow flaw, both leading
to a heap-based buffer overflow, were found in the way Git processed
certain path information. A remote attacker could create a specially
crafted Git repository that would cause a Git client or server to
crash or, possibly, execute arbitrary code. (CVE-2016-2315,
CVE-2016-2324)

All git users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2016-March/021770.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?343f6cdb"
  );
  # https://lists.centos.org/pipermail/centos-announce/2016-March/021771.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?fd7d671c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected git packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"cvss_score_source", value:"CVE-2016-2315");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:emacs-git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:emacs-git-el");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-all");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-bzr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-cvs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-email");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-gui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-hg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-p4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-svn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gitk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gitweb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:perl-Git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:perl-Git-SVN");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/24");
  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:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^(6|7)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x / 7.x", "CentOS " + os_ver);

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


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


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"emacs-git-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"emacs-git-el-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-all-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-cvs-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-daemon-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-email-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-gui-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-svn-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"gitk-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"gitweb-1.7.1-4.el6_7.1")) flag++;
if (rpm_check(release:"CentOS-6", reference:"perl-Git-1.7.1-4.el6_7.1")) flag++;

if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"emacs-git-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"emacs-git-el-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-all-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-bzr-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-cvs-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-daemon-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-email-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-gui-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-hg-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-p4-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"git-svn-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"gitk-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"gitweb-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"perl-Git-1.8.3.1-6.el7_2.1")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"perl-Git-SVN-1.8.3.1-6.el7_2.1")) 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, "emacs-git / emacs-git-el / git / git-all / git-bzr / git-cvs / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2016-078-01. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include("compat.inc");

if (description)
{
  script_id(90028);
  script_version("$Revision: 2.3 $");
  script_cvs_date("$Date: 2016/10/19 14:37:26 $");

  script_cve_id("CVE-2016-2315", "CVE-2016-2324");
  script_xref(name:"SSA", value:"2016-078-01");

  script_name(english:"Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : git (SSA:2016-078-01)");
  script_summary(english:"Checks for updated package in /var/log/packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Slackware host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New git packages are available for Slackware 13.0, 13.1, 13.37, 14.0,
14.1, and -current to fix security issues."
  );
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.512254
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?00780485"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected git package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:slackware:slackware_linux:git");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.37");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/21");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016 Tenable Network Security, Inc.");
  script_family(english:"Slackware Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("slackware.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) audit(AUDIT_PACKAGE_LIST_MISSING);


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


flag = 0;
if (slackware_check(osver:"13.0", pkgname:"git", pkgver:"2.7.4", pkgarch:"i486", pkgnum:"1_slack13.0")) flag++;
if (slackware_check(osver:"13.0", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1_slack13.0")) flag++;

if (slackware_check(osver:"13.1", pkgname:"git", pkgver:"2.7.4", pkgarch:"i486", pkgnum:"1_slack13.1")) flag++;
if (slackware_check(osver:"13.1", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1_slack13.1")) flag++;

if (slackware_check(osver:"13.37", pkgname:"git", pkgver:"2.7.4", pkgarch:"i486", pkgnum:"1_slack13.37")) flag++;
if (slackware_check(osver:"13.37", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1_slack13.37")) flag++;

if (slackware_check(osver:"14.0", pkgname:"git", pkgver:"2.7.4", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++;
if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++;

if (slackware_check(osver:"14.1", pkgname:"git", pkgver:"2.7.4", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++;
if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++;

if (slackware_check(osver:"current", pkgname:"git", pkgver:"2.7.4", pkgarch:"i586", pkgnum:"1")) flag++;
if (slackware_check(osver:"current", arch:"x86_64", pkgname:"git", pkgver:"2.7.4", pkgarch:"x86_64", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:slackware_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");