Debian: Security Advisory (DSA-4159-1)

# 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("1.3.6.1.4.1.25623.1.0.704159");
  script_cve_id("CVE-2018-0493");
  script_tag(name:"creation_date", value:"2018-03-31 22:00:00 +0000 (Sat, 31 Mar 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:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-05-21 13:03:00 +0000 (Mon, 21 May 2018)");

  script_name("Debian: Security Advisory (DSA-4159-1)");
  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=DEB9");

  script_xref(name:"Advisory-ID", value:"DSA-4159-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2018/DSA-4159-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4159");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/remctl");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'remctl' package(s) announced via the DSA-4159-1 advisory.");

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

  script_tag(name:"insight", value:"Santosh Ananthakrishnan discovered a use-after-free in remctl, a server for Kerberos-authenticated command execution. If the command is configured with the sudo option, this could potentially result in the execution of arbitrary code.

The oldstable distribution (jessie) is not affected.

For the stable distribution (stretch), this problem has been fixed in version 3.13-1+deb9u1.

We recommend that you upgrade your remctl packages.

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

  script_tag(name:"affected", value:"'remctl' package(s) on 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 == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"libnet-remctl-perl", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libremctl-dev", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libremctl1", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"php-remctl", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"python-remctl", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"remctl-client", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"remctl-server", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"ruby-remctl", ver:"3.13-1+deb9u1", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);