Ubuntu: Security Advisory (USN-2598-2)

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.842205");
  script_tag(name:"creation_date", value:"2015-05-09 03:52:52 +0000 (Sat, 09 May 2015)");
  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-2598-2)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 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=UBUNTU14\.04\ LTS");

  script_xref(name:"Advisory-ID", value:"USN-2598-2");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-2598-2");
  script_xref(name:"URL", value:"https://launchpad.net/bugs/1450442");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'linux' package(s) announced via the USN-2598-2 advisory.");

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

  script_tag(name:"insight", value:"USN-2598-1 fixed vulnerabilities in the Linux kernel, however an unrelated
regression in the auditing of some path names was introduced. Due to the
regression the system could crash under certain conditions.

This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 A race condition between chown() and execve() was discovered in the Linux
 kernel. A local attacker could exploit this race by using chown on a
 setuid-user-binary to gain administrative privileges.");

  script_tag(name:"affected", value:"'linux' package(s) on Ubuntu 14.04.");

  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 == "UBUNTU14.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-generic", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-generic-lpae", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-lowlatency", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-powerpc-e500", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-powerpc-e500mc", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-powerpc-smp", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-powerpc64-emb", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"linux-image-3.13.0-52-powerpc64-smp", ver:"3.13.0-52.86", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

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

exit(0);