Debian: Security Advisory (DSA-4423-1)

# SPDX-FileCopyrightText: 2019 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("1.3.6.1.4.1.25623.1.0.704423");
  script_cve_id("CVE-2019-9894", "CVE-2019-9895", "CVE-2019-9897", "CVE-2019-9898");
  script_tag(name:"creation_date", value:"2019-04-06 02:00:11 +0000 (Sat, 06 Apr 2019)");
  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:"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:"2019-03-21 18:02:42 +0000 (Thu, 21 Mar 2019)");

  script_name("Debian: Security Advisory (DSA-4423-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 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-4423-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2019/DSA-4423-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4423");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/putty");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'putty' package(s) announced via the DSA-4423-1 advisory.");

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

  script_tag(name:"insight", value:"Multiple vulnerabilities were found in the PuTTY SSH client, which could result in denial of service and potentially the execution of arbitrary code. In addition, in some situations random numbers could potentially be re-used.

For the stable distribution (stretch), these problems have been fixed in version 0.67-3+deb9u1.

We recommend that you upgrade your putty packages.

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

  script_tag(name:"affected", value:"'putty' 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:"pterm", ver:"0.67-3+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"putty", ver:"0.67-3+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"putty-doc", ver:"0.67-3+deb9u1", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"putty-tools", ver:"0.67-3+deb9u1", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);