Mageia: Security Advisory (MGASA-2020-0081)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.10.2020.0081");
  script_cve_id("CVE-2019-18634");
  script_tag(name:"creation_date", value:"2022-01-28 10:58:44 +0000 (Fri, 28 Jan 2022)");
  script_version("2024-02-02T05:06:09+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:09 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-02-06 16:00:20 +0000 (Thu, 06 Feb 2020)");

  script_name("Mageia: Security Advisory (MGASA-2020-0081)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Mageia Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/mageia_linux", "ssh/login/release", re:"ssh/login/release=MAGEIA7");

  script_xref(name:"Advisory-ID", value:"MGASA-2020-0081");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2020-0081.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=26155");
  script_xref(name:"URL", value:"https://www.sudo.ws/alerts/pwfeedback.html");
  script_xref(name:"URL", value:"https://www.openwall.com/lists/oss-security/2020/01/30/6");
  script_xref(name:"URL", value:"https://www.sudo.ws/stable.html#1.8.31");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'sudo' package(s) announced via the MGASA-2020-0081 advisory.");

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

  script_tag(name:"insight", value:"The updated packages fix a security vulnerability:

In Sudo before 1.8.31, if pwfeedback is enabled in /etc/sudoers, users can
trigger a stack-based buffer overflow in the privileged sudo process.
(pwfeedback is a default setting in Linux Mint and elementary OS, however,
it is NOT the default for upstream and many other packages, and would exist
only if enabled by an administrator.) The attacker needs to deliver a long
string to the stdin of getln() in tgetpass.c. (CVE-2019-18634)");

  script_tag(name:"affected", value:"'sudo' package(s) on Mageia 7.");

  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 == "MAGEIA7") {

  if(!isnull(res = isrpmvuln(pkg:"sudo", rpm:"sudo~1.8.28~1.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"sudo-devel", rpm:"sudo-devel~1.8.28~1.1.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

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

exit(0);