Ubuntu: Security Advisory (USN-3977-2)

# SPDX-FileCopyrightText: 2019 Greenbone AG
# 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-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.844021");
  script_cve_id("CVE-2018-12126", "CVE-2018-12127", "CVE-2018-12130", "CVE-2019-11091");
  script_tag(name:"creation_date", value:"2019-05-23 02:00:30 +0000 (Thu, 23 May 2019)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.7");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-05-31 16:11:41 +0000 (Fri, 31 May 2019)");

  script_name("Ubuntu: Security Advisory (USN-3977-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU(14\.04\ LTS|16\.04\ LTS|18\.04\ LTS|18\.10|19\.04)");

  script_xref(name:"Advisory-ID", value:"USN-3977-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-3977-2");
  script_xref(name:"URL", value:"https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/MDS");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'intel-microcode' package(s) announced via the USN-3977-2 advisory.");

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

  script_tag(name:"insight", value:"USN-3977-1 provided mitigations for Microarchitectural Data Sampling
(MDS) vulnerabilities in Intel Microcode for a large number of Intel
processor families. This update provides the corresponding updated
microcode mitigations for Intel Cherry Trail and Bay Trail processor
families.

Original advisory details:

 Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan
 Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa
 Milburn, Sebastian Osterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos,
 Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss
 discovered that memory previously stored in microarchitectural fill buffers
 of an Intel CPU core may be exposed to a malicious process that is
 executing on the same CPU core. A local attacker could use this to expose
 sensitive information. (CVE-2018-12130)

 Brandon Falk, Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Stephan
 van Schaik, Alyssa Milburn, Sebastian Osterlund, Pietro Frigo, Kaveh
 Razavi, Herbert Bos, and Cristiano Giuffrida discovered that memory
 previously stored in microarchitectural load ports of an Intel CPU core may
 be exposed to a malicious process that is executing on the same CPU core. A
 local attacker could use this to expose sensitive information.
 (CVE-2018-12127)

 Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Marina Minkin, Daniel
 Moghimi, Moritz Lipp, Michael Schwarz, Jo Van Bulck, Daniel Genkin, Daniel
 Gruss, Berk Sunar, Frank Piessens, and Yuval Yarom discovered that memory
 previously stored in microarchitectural store buffers of an Intel CPU core
 may be exposed to a malicious process that is executing on the same CPU
 core. A local attacker could use this to expose sensitive information.
 (CVE-2018-12126)

 Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Volodrmyr Pikhur,
 Moritz Lipp, Michael Schwarz, Daniel Gruss, Stephan van Schaik, Alyssa
 Milburn, Sebastian Osterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and
 Cristiano Giuffrida discovered that uncacheable memory previously stored in
 microarchitectural buffers of an Intel CPU core may be exposed to a
 malicious process that is executing on the same CPU core. A local attacker
 could use this to expose sensitive information. (CVE-2019-11091)");

  script_tag(name:"affected", value:"'intel-microcode' package(s) on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.");

  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-deb.inc");

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

res = "";
report = "";

if(release == "UBUNTU14.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"intel-microcode", ver:"3.20190514.0ubuntu0.14.04.2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU16.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"intel-microcode", ver:"3.20190514.0ubuntu0.16.04.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU18.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"intel-microcode", ver:"3.20190514.0ubuntu0.18.04.3", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU18.10") {

  if(!isnull(res = isdpkgvuln(pkg:"intel-microcode", ver:"3.20190514.0ubuntu0.18.10.2", rls:"UBUNTU18.10"))) {
    report += res;
  }

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

if(release == "UBUNTU19.04") {

  if(!isnull(res = isdpkgvuln(pkg:"intel-microcode", ver:"3.20190514.0ubuntu0.19.04.3", rls:"UBUNTU19.04"))) {
    report += res;
  }

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

exit(0);