Ubuntu: Security Advisory (USN-5342-3)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.12.2022.5342.3");
  script_cve_id("CVE-2021-3426");
  script_tag(name:"creation_date", value:"2023-01-27 04:10:43 +0000 (Fri, 27 Jan 2023)");
  script_version("2024-02-28T14:37:42+0000");
  script_tag(name:"last_modification", value:"2024-02-28 14:37:42 +0000 (Wed, 28 Feb 2024)");
  script_tag(name:"cvss_base", value:"2.7");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:S/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-05-27 20:36:30 +0000 (Thu, 27 May 2021)");

  script_name("Ubuntu: Security Advisory (USN-5342-3)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 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-5342-3");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-5342-3");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'python3.7' package(s) announced via the USN-5342-3 advisory.");

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

  script_tag(name:"insight", value:"USN-5342-1 fixed several vulnerabilities in Python. This update provides
the corresponding fix for CVE-2021-3426 for Ubuntu 18.04 ESM.

Original advisory details:

 David Schworer discovered that Python incorrectly handled certain inputs.
 An attacker could possibly use this issue to expose sensitive information.
 This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)

 It was discovered that Python incorrectly handled certain FTP requests.
 An attacker could possibly use this issue to expose sensitive information.
 This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS.
 (CVE-2021-4189)

 It was discovered that Python incorrectly handled certain inputs.
 An attacker could possibly use this issue to execute arbitrary code.
 (CVE-2022-0391)");

  script_tag(name:"affected", value:"'python3.7' 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:"python3.7", ver:"3.7.5-2ubuntu1~18.04.2+esm1", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"python3.7-minimal", ver:"3.7.5-2ubuntu1~18.04.2+esm1", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

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

exit(0);