Mageia: Security Advisory (MGASA-2021-0288)

# 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("1.3.6.1.4.1.25623.1.1.10.2021.0288");
  script_cve_id("CVE-2019-18276");
  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:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  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:"2020-01-22 14:27:39 +0000 (Wed, 22 Jan 2020)");

  script_name("Mageia: Security Advisory (MGASA-2021-0288)");
  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-2021-0288");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2021-0288.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=28937");
  script_xref(name:"URL", value:"https://access.redhat.com/errata/RHSA-2021:1679");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'bash' package(s) announced via the MGASA-2021-0288 advisory.");

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

  script_tag(name:"insight", value:"A privilege escalation vulnerability was found in bash in the way it dropped
privileges when started with an effective user id not equal to the real user
id. Bash may be vulnerable to this flaw if the setuid permission is set and
the owner of the bash program itself is a non-root user. A local attacker
could exploit this flaw to escalate their privileges on the system
(CVE-2019-18276).");

  script_tag(name:"affected", value:"'bash' 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:"bash", rpm:"bash~4.4~23.1.2.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"bash-doc", rpm:"bash-doc~4.4~23.1.2.mga7", rls:"MAGEIA7"))) {
    report += res;
  }

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

exit(0);