Mageia: Security Advisory (MGASA-2016-0396)

# 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("1.3.6.1.4.1.25623.1.1.10.2016.0396");
  script_cve_id("CVE-2016-6354");
  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:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/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:"2016-09-22 00:58:06 +0000 (Thu, 22 Sep 2016)");

  script_name("Mageia: Security Advisory (MGASA-2016-0396)");
  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-2016-0396");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2016-0396.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=19063");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/[email protected]/thread/KZDEYNSCYVEMOKRO6EJOUZS7WM5WB43M/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'flex' package(s) announced via the MGASA-2016-0396 advisory.");

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

  script_tag(name:"insight", value:"It was found that flex incorrectly resized the num_to_read variable in
yy_get_next_buffer. The buffer is resized if this value is less or equal
to zero. With special crafted input it is possible, that the buffer is not
resized if the input is larger than the default buffer size of 16k. This
allows a heap buffer overflow. It may be possible to exploit this
remotely, depending on the application that is built using flex
(CVE-2016-6354).

Note that any affected applications would need to be rebuilt with the
updated flex to fully fix this issue.");

  script_tag(name:"affected", value:"'flex' 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:"flex", rpm:"flex~2.5.39~3.1.mga5", rls:"MAGEIA5"))) {
    report += res;
  }

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

exit(0);