Ubuntu: Security Advisory (USN-612-11)

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.840276");
  script_tag(name:"creation_date", value:"2009-03-23 09:59:50 +0000 (Mon, 23 Mar 2009)");
  script_version("2023-07-05T05:06:16+0000");
  script_tag(name:"last_modification", value:"2023-07-05 05:06:16 +0000 (Wed, 05 Jul 2023)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_name("Ubuntu: Security Advisory (USN-612-11)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU(6\.06\ LTS|7\.04|7\.10|8\.04\ LTS)");

  script_xref(name:"Advisory-ID", value:"USN-612-11");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-612-11");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-612-1");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-612-3");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-612-8");
  script_xref(name:"URL", value:"http://www.ubuntu.com/usn/usn-612-9");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssl-blacklist' package(s) announced via the USN-612-11 advisory.");

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

  script_tag(name:"insight", value:"USN-612-3 addressed a weakness in OpenSSL certificate and key
generation and introduced openssl-blacklist to aid in detecting
vulnerable certificates and keys. This update adds RSA-4096
blocklists to the openssl-blacklist-extra package and adjusts
openssl-vulnkey to properly handle RSA-4096 and higher moduli.

Original advisory details:
 A weakness has been discovered in the random number generator used
 by OpenSSL on Debian and Ubuntu systems. As a result of this
 weakness, certain encryption keys are much more common than they
 should be, such that an attacker could guess the key through a
 brute-force attack given minimal knowledge of the system. This
 particularly affects the use of encryption keys in OpenSSH, OpenVPN
 and SSL certificates.");

  script_tag(name:"affected", value:"'openssl-blacklist' package(s) on Ubuntu 6.06, Ubuntu 7.04, Ubuntu 7.10, Ubuntu 8.04.");

  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 == "UBUNTU6.06 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist", ver:"0.3.3+0.4-0ubuntu0.6.06.2", rls:"UBUNTU6.06 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist-extra", ver:"0.3.3+0.4-0ubuntu0.6.06.2", rls:"UBUNTU6.06 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU7.04") {

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist", ver:"0.3.3+0.4-0ubuntu0.7.04.2", rls:"UBUNTU7.04"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist-extra", ver:"0.3.3+0.4-0ubuntu0.7.04.2", rls:"UBUNTU7.04"))) {
    report += res;
  }

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

if(release == "UBUNTU7.10") {

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist", ver:"0.3.3+0.4-0ubuntu0.7.10.2", rls:"UBUNTU7.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist-extra", ver:"0.3.3+0.4-0ubuntu0.7.10.2", rls:"UBUNTU7.10"))) {
    report += res;
  }

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

if(release == "UBUNTU8.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist", ver:"0.3.3+0.4-0ubuntu0.8.04.3", rls:"UBUNTU8.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl-blacklist-extra", ver:"0.3.3+0.4-0ubuntu0.8.04.3", rls:"UBUNTU8.04 LTS"))) {
    report += res;
  }

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

exit(0);