Ubuntu: Security Advisory (USN-5186-2)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.845176");
  script_cve_id("CVE-2021-43536", "CVE-2021-43537", "CVE-2021-43538", "CVE-2021-43539", "CVE-2021-43540", "CVE-2021-43541", "CVE-2021-43542", "CVE-2021-43543", "CVE-2021-43545", "CVE-2021-43546");
  script_tag(name:"creation_date", value:"2021-12-21 02:00:29 +0000 (Tue, 21 Dec 2021)");
  script_version("2024-02-02T05:06:08+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:08 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-12-10 16:44:53 +0000 (Fri, 10 Dec 2021)");

  script_name("Ubuntu: Security Advisory (USN-5186-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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(18\.04\ LTS|20\.04\ LTS|21\.04|21\.10)");

  script_xref(name:"Advisory-ID", value:"USN-5186-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-5186-2");
  script_xref(name:"URL", value:"https://launchpad.net/bugs/1955433");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'firefox' package(s) announced via the USN-5186-2 advisory.");

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

  script_tag(name:"insight", value:"USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several
minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 Multiple security issues were discovered in Firefox. If a user were
 tricked into opening a specially crafted website, an attacker could
 potentially exploit these to cause a denial of service, obtain sensitive
 information, conduct spoofing attacks, bypass CSP restrictions, or
 execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,
 CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,
 CVE-2021-43545, CVE-2021-43546)

 A security issue was discovered with the handling of WebExtension
 permissions. If a user were tricked into installing a specially crafted
 extension, an attacker could potentially exploit this to create and
 install a service worker that wouldn't be uninstalled with the extension.
 (CVE-2021-43540)");

  script_tag(name:"affected", value:"'firefox' package(s) on Ubuntu 18.04, Ubuntu 20.04, Ubuntu 21.04, Ubuntu 21.10.");

  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 == "UBUNTU18.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"firefox", ver:"95.0.1+build2-0ubuntu0.18.04.1", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU20.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"firefox", ver:"95.0.1+build2-0ubuntu0.20.04.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU21.04") {

  if(!isnull(res = isdpkgvuln(pkg:"firefox", ver:"95.0.1+build2-0ubuntu0.21.04.1", rls:"UBUNTU21.04"))) {
    report += res;
  }

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

if(release == "UBUNTU21.10") {

  if(!isnull(res = isdpkgvuln(pkg:"firefox", ver:"95.0.1+build2-0ubuntu0.21.10.1", rls:"UBUNTU21.10"))) {
    report += res;
  }

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

exit(0);