Ubuntu: Security Advisory (USN-4995-2)

# 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("1.3.6.1.4.1.25623.1.0.844991");
  script_cve_id("CVE-2021-23961", "CVE-2021-23981", "CVE-2021-23982", "CVE-2021-23984", "CVE-2021-23987", "CVE-2021-23991", "CVE-2021-23992", "CVE-2021-23993", "CVE-2021-23994", "CVE-2021-23995", "CVE-2021-23998", "CVE-2021-23999", "CVE-2021-24002", "CVE-2021-29945", "CVE-2021-29946", "CVE-2021-29948", "CVE-2021-29949", "CVE-2021-29956", "CVE-2021-29957", "CVE-2021-29967");
  script_tag(name:"creation_date", value:"2021-06-26 03:00:22 +0000 (Sat, 26 Jun 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:"2021-06-25 13:23:50 +0000 (Fri, 25 Jun 2021)");

  script_name("Ubuntu: Security Advisory (USN-4995-2)");
  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=UBUNTU18\.04\ LTS");

  script_xref(name:"Advisory-ID", value:"USN-4995-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-4995-2");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'thunderbird' package(s) announced via the USN-4995-2 advisory.");

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

  script_tag(name:"insight", value:"USN-4995-1 fixed vulnerabilities in Thunderbird. This update provides
the corresponding updates for Ubuntu 18.04 LTS.

Original advisory details:

 Multiple security issues were discovered in Thunderbird. If a user were
 tricked into opening a specially crafted website in a browsing context, an
 attacker could potentially exploit these to cause a denial of service,
 obtain sensitive information, spoof the UI, bypass security restrictions,
 or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
 CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
 CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)

 It was discovered that extensions could open popup windows with control
 of the window title in some circumstances. If a user were tricked into
 installing a specially crafted extension, an attacker could potentially
 exploit this to spoof a website and trick the user into providing
 credentials. (CVE-2021-23984)

 Multiple security issues were discovered in Thunderbird's OpenPGP
 integration. If a user were tricked into importing a specially crafted
 key in some circumstances, an attacker could potentially exploit this
 to cause a denial of service (inability to send encrypted email) or
 confuse the user. (CVE-2021-23991, CVE-2021-23992, CVE-2021-23993)

 A use-after-free was discovered when Responsive Design Mode was
 enabled. If a user were tricked into opening a specially crafted
 website with Responsive Design Mode enabled, an attacker could
 potentially exploit this to cause a denial of service, or execute
 arbitrary code. (CVE-2021-23995)

 It was discovered that Thunderbird mishandled ftp URLs with encoded
 newline characters. If a user were tricked into clicking on a specially
 crafted link, an attacker could potentially exploit this to send arbitrary
 FTP commands. (CVE-2021-24002)

 It was discovered that Thunderbird wrote signatures to disk and read them
 back during verification. A local attacker could potentially exploit this
 to replace the data with another signature file. (CVE-2021-29948)

 It was discovered that Thunderbird might load an alternative OTR
 library. If a user were tricked into copying a specially crafted
 library to one of Thunderbird's search paths, an attacker could
 potentially exploit this to execute arbitrary code. (CVE-2021-29949)

 It was discovered that secret keys imported into Thunderbird were
 stored unencrypted. A local attacker could potentially exploit this to
 obtain private keys. (CVE-2021-29956)

 It was discovered that Thunderbird did not indicate when an inline signed
 or encrypted message contained additional unprotected parts.
 (CVE-2021-29957)");

  script_tag(name:"affected", value:"'thunderbird' package(s) on Ubuntu 18.04.");

  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 == "UBUNTU18.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"thunderbird", ver:"1:78.11.0+build1-0ubuntu0.18.04.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

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

exit(0);