Ubuntu: Security Advisory (USN-1223-2)

# 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("1.3.6.1.4.1.25623.1.0.840766");
  script_cve_id("CVE-2011-3869", "CVE-2011-3870", "CVE-2011-3871");
  script_tag(name:"creation_date", value:"2011-10-10 14:05:48 +0000 (Mon, 10 Oct 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:"6.3");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:N/I:C/A:C");

  script_name("Ubuntu: Security Advisory (USN-1223-2)");
  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=UBUNTU10\.04\ LTS");

  script_xref(name:"Advisory-ID", value:"USN-1223-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-1223-2");
  script_xref(name:"URL", value:"https://launchpad.net/bugs/865462");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'puppet' package(s) announced via the USN-1223-2 advisory.");

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

  script_tag(name:"insight", value:"USN-1223-1 fixed vulnerabilities in Puppet. A regression was found on
Ubuntu 10.04 LTS that caused permission denied errors when managing SSH
authorized_keys files with Puppet. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that Puppet unsafely opened files when the k5login type
 is used to manage files. A local attacker could exploit this to overwrite
 arbitrary files which could be used to escalate privileges. (CVE-2011-3869)

 Ricky Zhou discovered that Puppet did not drop privileges when creating
 SSH authorized_keys files. A local attacker could exploit this to overwrite
 arbitrary files as root. (CVE-2011-3870)

 It was discovered that Puppet used a predictable filename when using the
 --edit resource. A local attacker could exploit this to edit arbitrary
 files or run arbitrary code as the user invoking the program, typically
 root. (CVE-2011-3871)");

  script_tag(name:"affected", value:"'puppet' package(s) on Ubuntu 10.04.");

  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:"puppet-common", ver:"0.25.4-2ubuntu6.4", rls:"UBUNTU10.04 LTS"))) {
    report += res;
  }

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

exit(0);