Mageia: Security Advisory (MGASA-2016-0393)

# 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("1.3.6.1.4.1.25623.1.1.10.2016.0393");
  script_cve_id("CVE-2016-0634", "CVE-2016-7543");
  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:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-01-20 16:32:29 +0000 (Fri, 20 Jan 2017)");

  script_name("Mageia: Security Advisory (MGASA-2016-0393)");
  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=MAGEIA5");

  script_xref(name:"Advisory-ID", value:"MGASA-2016-0393");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2016-0393.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=19462");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/[email protected]/thread/5GRFMCTX4O7RTLZX5CI45KC7GGM6XIIY/");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/[email protected]/thread/OU3C756YPHDAAPFX76UGZBAQQQ5UMHS5/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'bash' package(s) announced via the MGASA-2016-0393 advisory.");

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

  script_tag(name:"insight", value:"A vulnerability was found in a way bash expands the $HOSTNAME. Injecting
the hostname with malicious code would cause it to run each time bash
expanded \h in the prompt string (CVE-2016-0634).

Shells running as root inherited PS4 from the environment, allowing PS4
expansion performing command substitution. Local attacker could gain
arbitrary code execution via bogus setuid binaries using system()/popen()
by specially crafting SHELLOPTS+PS4 environment variables (CVE-2016-7543)");

  script_tag(name:"affected", value:"'bash' package(s) on Mageia 5.");

  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 == "MAGEIA5") {

  if(!isnull(res = isrpmvuln(pkg:"bash", rpm:"bash~4.3~48.2.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"bash-doc", rpm:"bash-doc~4.3~48.2.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

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

exit(0);