Debian: Security Advisory (DSA-4167-1)

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.704167");
  script_cve_id("CVE-2018-1000097");
  script_tag(name:"creation_date", value:"2018-04-04 22:00:00 +0000 (Wed, 04 Apr 2018)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-04-13 14:50:02 +0000 (Fri, 13 Apr 2018)");

  script_name("Debian: Security Advisory (DSA-4167-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB(8|9)");

  script_xref(name:"Advisory-ID", value:"DSA-4167-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2018/DSA-4167-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4167");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/sharutils");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'sharutils' package(s) announced via the DSA-4167-1 advisory.");

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

  script_tag(name:"insight", value:"A buffer-overflow vulnerability was discovered in Sharutils, a set of utilities handle Shell Archives. An attacker with control on the input of the unshar command, could crash the application or execute arbitrary code in the its context.

For the oldstable distribution (jessie), this problem has been fixed in version 1:4.14-2+deb8u1.

For the stable distribution (stretch), this problem has been fixed in version 1:4.15.2-2+deb9u1.

We recommend that you upgrade your sharutils packages.

For the detailed security status of sharutils please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'sharutils' package(s) on Debian 8, Debian 9.");

  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 == "DEB8") {

  if(!isnull(res = isdpkgvuln(pkg:"sharutils", ver:"1:4.14-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"sharutils-doc", ver:"1:4.14-2+deb8u1", rls:"DEB8"))) {
    report += res;
  }

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

if(release == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"sharutils", ver:"1:4.15.2-2+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"sharutils-doc", ver:"1:4.15.2-2+deb9u1", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);