Ubuntu: Security Advisory (USN-2872-1)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.842609");
  script_cve_id("CVE-2016-0728");
  script_tag(name:"creation_date", value:"2016-01-20 05:16:46 +0000 (Wed, 20 Jan 2016)");
  script_version("2024-02-02T05:06:05+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:05 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-02-24 23:56:50 +0000 (Wed, 24 Feb 2016)");

  script_name("Ubuntu: Security Advisory (USN-2872-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 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=UBUNTU15\.10");

  script_xref(name:"Advisory-ID", value:"USN-2872-1");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-2872-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'linux' package(s) announced via the USN-2872-1 advisory.");

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

  script_tag(name:"insight", value:"Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.");

  script_tag(name:"affected", value:"'linux' package(s) on Ubuntu 15.10.");

  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 == "UBUNTU15.10") {

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-generic", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-generic-lpae", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-lowlatency", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-powerpc-e500mc", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-powerpc-smp", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-powerpc64-emb", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-4.2.0-25-powerpc64-smp", ver:"4.2.0-25.30", rls:"UBUNTU15.10"))) {
    report += res;
  }

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

exit(0);