Amazon Linux: Security Advisory (ALAS-2015-617)

# Copyright (C) 2015 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.120607");
  script_cve_id("CVE-2013-7423", "CVE-2015-1472", "CVE-2015-1473", "CVE-2015-1781", "CVE-2015-5277");
  script_tag(name:"creation_date", value:"2015-12-15 00:51:20 +0000 (Tue, 15 Dec 2015)");
  script_version("2022-01-05T14:03:08+0000");
  script_tag(name:"last_modification", value:"2022-01-05 14:03:08 +0000 (Wed, 05 Jan 2022)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_name("Amazon Linux: Security Advisory (ALAS-2015-617)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 Greenbone Networks GmbH");
  script_family("Amazon Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/amazon_linux", "ssh/login/release");

  script_xref(name:"Advisory-ID", value:"ALAS-2015-617");
  script_xref(name:"URL", value:"https://alas.aws.amazon.com/ALAS-2015-617.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'glibc' package(s) announced via the ALAS-2015-617 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"A buffer overflow flaw was found in the way glibc's gethostbyname_r() and other related functions computed the size of a buffer when passed a misaligned buffer as input. An attacker able to make an application call any of these functions with a misaligned buffer could use this flaw to crash the application or, potentially, execute arbitrary code with the permissions of the user running the application. (CVE-2015-1781)

It was discovered that the nss_files backend for the Name Service Switch in glibc would return incorrect data to applications or corrupt the heap (depending on adjacent heap contents). A local attacker could potentially use this flaw to execute arbitrary code on the system. (CVE-2015-5277)

It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data. (CVE-2013-7423)

A stack overflow flaw was found in glibc's swscanf() function. An attacker able to make an application call the swscanf() function could use this flaw to crash that application or, potentially, execute arbitrary code with the permissions of the user running the application. (CVE-2015-1473)

A heap-based buffer overflow flaw was found in glibc's swscanf() function. An attacker able to make an application call the swscanf() function could use this flaw to crash that application or, potentially, execute arbitrary code with the permissions of the user running the application. (CVE-2015-1472)");

  script_tag(name:"affected", value:"'glibc' package(s) on Amazon Linux.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "AMAZON") {

  if(!isnull(res = isrpmvuln(pkg:"glibc", rpm:"glibc~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-common", rpm:"glibc-common~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-debuginfo", rpm:"glibc-debuginfo~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-debuginfo-common", rpm:"glibc-debuginfo-common~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-devel", rpm:"glibc-devel~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-headers", rpm:"glibc-headers~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-static", rpm:"glibc-static~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-utils", rpm:"glibc-utils~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nscd", rpm:"nscd~2.17~106.163.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);