Ubuntu: Security Advisory (USN-1283-1)

# SPDX-FileCopyrightText: 2011 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("1.3.6.1.4.1.25623.1.0.840825");
  script_cve_id("CVE-2011-3634");
  script_tag(name:"creation_date", value:"2011-12-02 08:00:36 +0000 (Fri, 02 Dec 2011)");
  script_version("2024-02-02T05:06:04+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:04 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"2.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:N/A:N");

  script_name("Ubuntu: Security Advisory (USN-1283-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 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(10\.04\ LTS|10\.10|11\.04|8\.04\ LTS)");

  script_xref(name:"Advisory-ID", value:"USN-1283-1");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-1283-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'apt' package(s) announced via the USN-1283-1 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 discovered that APT incorrectly handled the Verify-Host
configuration option. If a remote attacker were able to perform a
machine-in-the-middle attack, this flaw could potentially be used to steal
repository credentials. This issue only affected Ubuntu 10.04 LTS and
10.10. (CVE-2011-3634)

USN-1215-1 fixed a vulnerability in APT by disabling the apt-key net-update
option. This update re-enables the option with corrected verification.
Original advisory details:
 It was discovered that the apt-key utility incorrectly verified GPG
 keys when downloaded via the net-update option. If a remote attacker were
 able to perform a machine-in-the-middle attack, this flaw could potentially be
 used to install altered packages.");

  script_tag(name:"affected", value:"'apt' package(s) on Ubuntu 8.04, Ubuntu 10.04, Ubuntu 10.10, Ubuntu 11.04.");

  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 == "UBUNTU10.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"apt", ver:"0.7.25.3ubuntu9.9", rls:"UBUNTU10.04 LTS"))) {
    report += res;
  }

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

if(release == "UBUNTU10.10") {

  if(!isnull(res = isdpkgvuln(pkg:"apt", ver:"0.8.3ubuntu7.3", rls:"UBUNTU10.10"))) {
    report += res;
  }

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

if(release == "UBUNTU11.04") {

  if(!isnull(res = isdpkgvuln(pkg:"apt", ver:"0.8.13.2ubuntu4.3", rls:"UBUNTU11.04"))) {
    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:"apt", ver:"0.7.9ubuntu17.4", rls:"UBUNTU8.04 LTS"))) {
    report += res;
  }

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

exit(0);